remove -D_GLIBCXX_DEBUG

This was a convenience for Cary to not have to use extra_cflags,
and iterferes with using prebuilt C++ code by breaking the ABI.

Change-Id: I9e14ec04106a0abf9b55e5803242c2eb226d6e3f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/276445
Commit-Queue: Herb Derby <herb@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Herb Derby <herb@google.com>
1 file changed