Remove some extra semi-colons in tests

These snuck in here and cause clang warnings.  Fix them.

Change-Id: I526cfee1ebc799eae48b92e790273f31462c655f
Signed-off-by: Ed Tanous <edtanous@google.com>
diff --git a/example/coroutine-example.cpp b/example/coroutine-example.cpp
index 725aa88..b402070 100644
--- a/example/coroutine-example.cpp
+++ b/example/coroutine-example.cpp
@@ -87,7 +87,7 @@
         {
             std::cout << service << " released" << std::endl;
         }
-    };
+    }
 
     // We are all done, so shutdown the server.
     ctx.request_stop();