Remove redundant semicolon from namespace closing

Change-Id: I163f9d3d216c283ae1160ce4802e5247cf44fba7
diff --git a/services/audioflinger/AudioMixer.h b/services/audioflinger/AudioMixer.h
index c5df08a..381036b 100644
--- a/services/audioflinger/AudioMixer.h
+++ b/services/audioflinger/AudioMixer.h
@@ -485,6 +485,6 @@
 };
 
 // ----------------------------------------------------------------------------
-}; // namespace android
+} // namespace android
 
 #endif // ANDROID_AUDIO_MIXER_H