namespace does not need a closing semicolon

Change-Id: Ie8f9d42fc061f6d558f23b98414e04eb3d14b376
diff --git a/media/libmedia/AudioSystem.cpp b/media/libmedia/AudioSystem.cpp
index f5a5712..c6b34a7 100644
--- a/media/libmedia/AudioSystem.cpp
+++ b/media/libmedia/AudioSystem.cpp
@@ -1003,4 +1003,4 @@
     }
 }
 
-}; // namespace android
+} // namespace android