Removed the condition variable from socket watcher
Removed the condition variable from socket watcher

It's not useful any more, because whenever we signal the
variable, we're on the same (watcher) thread, so there
can be no "wake-up".

This has actually been like this for a while, but, this went
unnoticed.

pubnub/c-core,pubnub/c-core,pubnub/c-core,pubnub/c-core