Revert "pre-upload: add cargo_fmt_check presubmit hook"

The rustfmt pre-upload check is more generic and replaces the cargo fmt
check.

This reverts commit a66f576c8bb4532f781f82ef8776cf03d4358798.

BUG=chromium:908640
TEST=`repo upload` with an unformatted Rust change
CQ-DEPEND=CL:1376070

Change-Id: Ie6e7aa689049bf72ba8dd0e94ecca8ce40dd9fdd
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1376350
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed