Fixing clang_format_code failure

src/objective-c/GRPCClient/private/GRPCChannelPool.m

@@ -219,7 +219,6 @@ static const NSTimeInterval kDefaultChannelDestroyDelay = 30;
 }
 
 - (void)dealloc {
-
 }
 
 - (GRPCPooledChannel *)channelWithHost:(NSString *)host callOptions:(GRPCCallOptions *)callOptions {