Revert of [gn] Add cctest (patchset #3 id:40001 of https://codereview.chromium.org/2007143003/ )

Reason for revert:
Blocks Roll https://bugs.chromium.org/p/chromium/issues/detail?id=615890

Original issue's description:
> [gn] Add cctest
>
> BUG=chromium:474921
> NOTRY=true
>
> Committed: https://crrev.com/52a6fced896e3f64ac56eb57bcdea78393642e0c
> Cr-Commit-Position: refs/heads/master@{#36517}
>
> Committed: https://crrev.com/65678bc67fc48dfe4dcab7fdd2c4b7e1d6e918f4
> Cr-Commit-Position: refs/heads/master@{#36586}

TBR=vogelheim@chromium.org,jochen@chromium.org,machenbach@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:474921

Review-Url: https://codereview.chromium.org/2021213002
Cr-Commit-Position: refs/heads/master@{#36603}

BUILD.gn

@@ -2070,7 +2070,6 @@ group("gn_all") {
   if (host_os != "mac" || !is_android) {
     # These items don't compile for Android on Mac.
     deps += [
-      "test/cctest:cctest",
       "test/unittests:unittests",
     ]
   }