diff --git a/metadata/com.android.inputmethod.pinyin/build_1.patch b/metadata/com.android.inputmethod.pinyin/build_1.patch
deleted file mode 100644
index d268308aa3..0000000000
--- a/metadata/com.android.inputmethod.pinyin/build_1.patch
+++ /dev/null
@@ -1,109 +0,0 @@
-diff --git a/build.xml b/build.xml
-index 505e9a0..6c08dac 100644
---- a/build.xml
-+++ b/build.xml
-@@ -1,10 +1,10 @@
- <?xml version="1.0" encoding="UTF-8"?>
--<project name="com.android.inputmethod.pinyin" default="help">
-+<project name="PinyinIME" default="help">
- 
-     <!-- The local.properties file is created and updated by the 'android' tool.
-          It contains the path to the SDK. It should *NOT* be checked into
-          Version Control Systems. -->
--    <property file="local.properties" />
-+    <loadproperties srcFile="local.properties" />
- 
-     <!-- The ant.properties file can be created by you. It is only edited by the
-          'android' tool to add properties to it.
-@@ -28,15 +28,6 @@
-          -->
-     <property file="ant.properties" />
- 
--    <!-- if sdk.dir was not set from one of the property file, then
--         get it from the ANDROID_HOME env var.
--         This must be done before we load project.properties since
--         the proguard config can use sdk.dir -->
--    <property environment="env" />
--    <condition property="sdk.dir" value="${env.ANDROID_HOME}">
--        <isset property="env.ANDROID_HOME" />
--    </condition>
--
-     <!-- The project.properties file is created and updated by the 'android'
-          tool, as well as ADT.
- 
-@@ -50,23 +41,61 @@
- 
-     <!-- quick check on sdk.dir -->
-     <fail
--            message="sdk.dir is missing. Make sure to generate local.properties using 'android update project' or to inject it through the ANDROID_HOME environment variable."
-+            message="sdk.dir is missing. Make sure to generate local.properties using 'android update project'"
-             unless="sdk.dir"
-     />
- 
--    <!--
--        Import per project custom build rules if present at the root of the project.
--        This is the place to put custom intermediary targets such as:
--            -pre-build
--            -pre-compile
--            -post-compile (This is typically used for code obfuscation.
--                           Compiled code location: ${out.classes.absolute.dir}
--                           If this is not done in place, override ${out.dex.input.absolute.dir})
--            -post-package
--            -post-build
--            -pre-clean
--    -->
--    <import file="custom_rules.xml" optional="true" />
-+
-+<!-- extension targets. Uncomment the ones where you want to do custom work
-+     in between standard targets -->
-+<!--
-+    <target name="-pre-build">
-+    </target>
-+    <target name="-pre-compile">
-+    </target>
-+
-+    /* This is typically used for code obfuscation.
-+       Compiled code location: ${out.classes.absolute.dir}
-+       If this is not done in place, override ${out.dex.input.absolute.dir} */
-+    <target name="-post-compile">
-+    </target>
-+-->
-+
-+    <!-- Puts the project's resources into the output package file
-+         This actually can create multiple resource package in case
-+         Some custom apk with specific configuration have been
-+         declared in default.properties.
-+         -->
-+    <target name="-package-resources" depends="-crunch">
-+        <!-- only package resources if *not* a library project -->
-+        <do-only-if-not-library elseText="Library project: do not package resources..." >
-+            <aapt executable="${aapt}"
-+                    command="package"
-+                    versioncode="${version.code}"
-+                    versionname="${version.name}"
-+                    debug="${build.is.packaging.debug}"
-+                    manifest="${out.manifest.abs.file}"
-+                    assets="${asset.absolute.dir}"
-+                    androidjar="${project.target.android.jar}"
-+                    apkfolder="${out.absolute.dir}"
-+                    nocrunch="${build.packaging.nocrunch}"
-+                    resourcefilename="${resource.package.file.name}"
-+                    resourcefilter="${aapt.resource.filter}"
-+                    libraryResFolderPathRefid="project.library.res.folder.path"
-+                    libraryPackagesRefid="project.library.packages"
-+                    previousBuildType="${build.last.target}"
-+                    buildType="${build.target}"
-+                    libraryRFileRefid="project.library.bin.r.file.path"
-+                    manifestpackage="${package.name}"
-+                    ignoreAssets="${aapt.ignore.assets}">
-+                <res path="${out.res.absolute.dir}" />
-+                <res path="${resource.absolute.dir}" />
-+                <!-- <nocompress /> forces no compression on any files in assets or res/raw -->
-+                <nocompress extension="dict" />
-+                <nocompress extension="dat" />
-+            </aapt>
-+        </do-only-if-not-library>
-+    </target>
- 
-     <!-- Import the actual build file.
- 
diff --git a/metadata/com.android.inputmethod.pinyin/ndk-build_1.patch b/metadata/com.android.inputmethod.pinyin/ndk-build_1.patch
deleted file mode 100644
index 9402b6e760..0000000000
--- a/metadata/com.android.inputmethod.pinyin/ndk-build_1.patch
+++ /dev/null
@@ -1,51 +0,0 @@
-diff --git a/jni/Android.mk b/jni/Android.mk
-index 9b168aa..157443d 100644
---- a/jni/Android.mk
-+++ b/jni/Android.mk
-@@ -24,9 +24,8 @@ LOCAL_SRC_FILES := \
- 	share/sync.cpp
- 
- LOCAL_C_INCLUDES += $(JNI_H_INCLUDE)
--LOCAL_LDLIBS += -lpthread
- LOCAL_MODULE := libjni_pinyinime
--LOCAL_SHARED_LIBRARIES := libcutils libutils
-+LOCAL_SHARED_LIBRARIES := libutils
- LOCAL_MODULE_TAGS := optional
- 
- include $(BUILD_SHARED_LIBRARY)
-diff --git a/jni/android/com_android_inputmethod_pinyin_PinyinDecoderService.cpp b/jni/android/com_android_inputmethod_pinyin_PinyinDecoderService.cpp
-index dcb63a1..3d232ad 100644
---- a/jni/android/com_android_inputmethod_pinyin_PinyinDecoderService.cpp
-+++ b/jni/android/com_android_inputmethod_pinyin_PinyinDecoderService.cpp
-@@ -15,7 +15,6 @@
-  */
- 
- #include <assert.h>
--#include <cutils/log.h>
- #include <jni.h>
- #include <string.h>
- #include <sys/types.h>
-@@ -388,11 +387,8 @@ static int registerNativeMethods(JNIEnv* env, const char* className,
-     }
- 
-     clazz = env->FindClass("java/io/FileDescriptor");
--    LOG_FATAL_IF(clazz == NULL, "Unable to find Java class java.io.FileDescriptor");
-     gFileDescriptorOffsets.mClass = (jclass) env->NewGlobalRef(clazz);
-     gFileDescriptorOffsets.mDescriptor = env->GetFieldID(clazz, "descriptor", "I");
--    LOG_FATAL_IF(gFileDescriptorOffsets.mDescriptor == NULL,
--                 "Unable to find descriptor field in java.io.FileDescriptor");
- 
-     return JNI_TRUE;
- }
-diff --git a/jni/share/userdict.cpp b/jni/share/userdict.cpp
-index 2843141..0eac1de 100644
---- a/jni/share/userdict.cpp
-+++ b/jni/share/userdict.cpp
-@@ -20,7 +20,6 @@
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
--#include <cutils/log.h>
- #include <unistd.h>
- #include <fcntl.h>
- #include <sys/stat.h>