Revert "Use -Werror in frameworks/native/libs/vr"

This reverts commit 38a11928990e62b263abe2dada0ff1f43d878e7c.

Change-Id: I2315300d0c8d52e224907a4f8edcf0d53658a742
diff --git a/libs/vr/libperformance/Android.bp b/libs/vr/libperformance/Android.bp
index 6a46876..364873d 100644
--- a/libs/vr/libperformance/Android.bp
+++ b/libs/vr/libperformance/Android.bp
@@ -32,9 +32,7 @@
     srcs: sourceFiles,
     cflags: [
         "-DLOG_TAG=\"libperformance\"",
-        "-DTRACE=0",
-        "-Wall",
-        "-Werror",
+	"-DTRACE=0"
     ],
     export_include_dirs: includeFiles,
     static_libs: staticLibraries,