Remove unnecessary scope from fragment shaders.

This block no longer appears to provide any benefit; we mangle variable
names to prevent name collisions already.

Change-Id: I970a9d55ed5a77b93ff611e6a58e9424db78f6db
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/382396
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
1 file changed