Merge pull request #20262 from dmaclach/patch-1

Remove -DGTM_USING_XCTEST

third_party/objective_c/google_toolbox_for_mac/BUILD

@@ -21,9 +21,6 @@ native.objc_library(
     srcs = [
         "UnitTesting/GTMGoogleTestRunner.mm",
     ],
-    copts = [
-        "-DGTM_USING_XCTEST",
-    ],
     deps = [
         "//external:gtest",
     ],