Remove .fp logic from CheckGeneratedFiles bot

Change-Id: I20541992cc85bf52c5672c437fe6baa823841987
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/426397
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2 files changed