audiopolicy: Remove ; after namespace bracket

Semicolons are not needed after the closing bracket of
a namespace, remove it.

Test: compiles
Change-Id: Ie82930365f738fd9c95a9163839a68b772e49d95
diff --git a/services/audiopolicy/AudioPolicyInterface.h b/services/audiopolicy/AudioPolicyInterface.h
index 1a32433..f2cb25f 100644
--- a/services/audiopolicy/AudioPolicyInterface.h
+++ b/services/audiopolicy/AudioPolicyInterface.h
@@ -355,6 +355,6 @@
 extern "C" void destroyAudioPolicyManager(AudioPolicyInterface *interface);
 
 
-}; // namespace android
+} // namespace android
 
 #endif // ANDROID_AUDIOPOLICY_INTERFACE_H