Remove big-GL files from normal builds of ANGLE Bug: angleproject:7533 Change-Id: I3616296d9923310200830a921190813e3ecfe80b Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4672146 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Roman Lavrov <romanl@google.com>