Remove dep between test:test_support and rtc_base_approved.

TBR: kwiberg@webrtc.org
Bug: webrtc:9419
Change-Id: I657306ac03cd9cb8add50ca269cf78e431a3ba0e
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/157580
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29561}
diff --git a/test/BUILD.gn b/test/BUILD.gn
index 64eff47..f47936f 100644
--- a/test/BUILD.gn
+++ b/test/BUILD.gn
@@ -237,7 +237,6 @@
   public_configs = [ ":test_main_direct_config" ]
   deps = [
     "../rtc_base:ignore_wundef",
-    "../rtc_base:rtc_base_approved",
     "//testing/gmock",
     "//testing/gtest",
   ]