remove unused config groups in sk_app Bazel BUILD file

Change-Id: Ifc94baf7ff757ca101ecc0e85dbb117700a41ca3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/633578
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Jorge Betancourt <jmbetancourt@google.com>
1 file changed