Remove extraneous semicolon.

Bug: N/A
Test: build w/o -Wno-c++98-compat-extra-semi
Change-Id: I632d6df9a03485e547a6e7f14df0f1c068066c1e
diff --git a/libs/binder/ActivityManager.cpp b/libs/binder/ActivityManager.cpp
index 49a9414..5e4c98f 100644
--- a/libs/binder/ActivityManager.cpp
+++ b/libs/binder/ActivityManager.cpp
@@ -114,4 +114,4 @@
     return INVALID_OPERATION;
 }
 
-}; // namespace android
+} // namespace android