Remove direct dependency on GL from Android EGL build

See cl/788509654 but the headers should come in from the
Android NDK

Change-Id: I38af446650d8862f94cc5b3b19738c915d3a73c4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/1028916
Auto-Submit: Kaylee Lubick <kjlubick@google.com>
Reviewed-by: Jorge Betancourt <jmbetancourt@google.com>
Commit-Queue: Jorge Betancourt <jmbetancourt@google.com>
1 file changed