remove -Wno-bad-function-cast

Doesn't seem to trigger.

Change-Id: I481b90a4e7fa0a4badc9acff9df1ec232a62417d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/271680
Commit-Queue: Mike Klein <mtklein@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
1 file changed