cronet import: Remove //components/grpc_support from import

Cronet does not actually depend on grpc_support, so it can be removed.

Test: none
Change-Id: Ib28591bc751774244d3c62298a0d07f2163f6720

Cronet/tools/import/copy.bara.sky

@@ -29,7 +29,6 @@ cronet_origin_files = glob(
         "build/buildflag.h",
         "chrome/VERSION",
         "components/cronet/**",
-        "components/grpc_suport/**",
         "components/metrics/**",
         "components/nacl/**",
         "components/prefs/**",