Minor Bazel cleanups.

Change-Id: Ie9005616e61a7b97f15c3fa957decb315b901fc8
Reviewed-on: https://code-review.googlesource.com/c/re2/+/61650
Reviewed-by: Paul Wankadia <junyer@google.com>
Reviewed-by: Alex Chernyakhovsky <achernya@google.com>
5 files changed