Remove a couple of unnecessary dependencies on gflags

webrtc/modules/audio_coding/BUILD.gn

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../../build/webrtc.gni")
 import("audio_coding.gni")
@@ skipping 1054 matching lines @@
     if (is_clang) {
       # Suppress warnings from the Chromium Clang plugins (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
 
     deps = [
       ":neteq",
       ":neteq_unittest_tools",
       ":pcm16b",
       "//testing/gtest",
-      "//third_party/gflags",
     ]
   }
 
   rtc_source_set("neteq_quality_test_support") {
     testonly = true
     sources = [
       "neteq/tools/neteq_quality_test.cc",
       "neteq/tools/neteq_quality_test.h",
     ]
 
@@ skipping 473 matching lines @@
       "//testing/gtest",
     ]
 
     if (is_clang) {
       # Suppress warnings from Chrome's Clang plugins.
       # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
   }
 }