Remove unnecessary __attribute__((optnone)).

Bug: 23239997

Now that the underlying bug has been fixed, we no longer need to
suppress optimizations to work around it.

Change-Id: I9d450636598f62f4b890e09861b89853193b0a29

client/FwmarkClient.cpp

@@ -44,7 +44,7 @@ FwmarkClient::~FwmarkClient() {
     }
 }
 
-int __attribute__((optnone)) FwmarkClient::send(FwmarkCommand* data, int fd) {
+int FwmarkClient::send(FwmarkCommand* data, int fd) {
     mChannel = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0);
     if (mChannel == -1) {
         return -errno;