pre-commit hook: use lint -f

This avoids calling rewritemeta separately, which means parsing all the
metadata files once instead of twice.

This reduces the running time of the pre-commit script from ~3s to ~2s
on my machine.

hooks/pre-commit

@@ -7,5 +7,4 @@ set -o pipefail
 # Redirect output to stderr.
 exec 1>&2
 
-./tools/verify-rewritemeta.sh
+fdroid lint -f
-fdroid lint

tools/verify-rewritemeta.sh

@@ -1,15 +0,0 @@
-#!/bin/bash
-
-# Check that there are no errors in the metadata files and that they are
-# formatted correctly.
-
-set -o errexit
-set -o nounset
-set -o pipefail
-
-files=$(fdroid rewritemeta -l)
-if [[ -n "$files" ]]; then
-	echo "ERROR: Run rewritemeta to fix formatting on these files:"
-	echo "$files"
-	exit 1
-fi