Revert of Conversational speech tool, simualtor + unit tests

webrtc/modules/audio_processing/test/conversational_speech/BUILD.gn

Index: webrtc/modules/audio_processing/test/conversational_speech/BUILD.gn
diff --git a/webrtc/modules/audio_processing/test/conversational_speech/BUILD.gn b/webrtc/modules/audio_processing/test/conversational_speech/BUILD.gn
index af24f8ab5e477c0af660460dcf4b1fb6924d75b8..b74c05bf9715bff85b6ad70c70c4d93cb907a8ee 100644
--- a/webrtc/modules/audio_processing/test/conversational_speech/BUILD.gn
+++ b/webrtc/modules/audio_processing/test/conversational_speech/BUILD.gn
@@ -35,8 +35,6 @@
     "config.h",
     "multiend_call.cc",
     "multiend_call.h",
-    "simulator.cc",
-    "simulator.h",
     "timing.cc",
     "timing.h",
     "wavreader_abstract_factory.h",
@@ -69,8 +67,5 @@
     "../../../../../webrtc/test:test_support",
     "//testing/gmock",
     "//testing/gtest",
-    "//webrtc:webrtc_common",
-    "//webrtc/base:rtc_base_approved",
-    "//webrtc/test:test_support",
   ]
 }