Fix Synchrony Process Manager TimeoutException on Confluence start.

There is a TimeoutException that happens sometimes on Confluence Startup when Synchrony doesn't start within its timeout limit. This is a result of fixing a deadlock in Tomcat with the Synchrony Proxy webapp by dropping the timeout from 30 seconds to 10. 

We should get rid of this TimeoutException, either by increasing the timeout back to 30 seconds, or by simply removing that block altogether, if it's not really required.

2016-12-20 12:19:20,701 WARN [lifecycle:thread-20] [plugins.synchrony.bootstrap.SynchronyInteropBootstrap] onStart An exception occurred while waiting for Synchrony to start: Timeout waiting for task.
2016-12-20 12:19:20,702 DEBUG [lifecycle:thread-20] [plugins.synchrony.bootstrap.SynchronyInteropBootstrap] onStart Details:
java.util.concurrent.TimeoutException: Timeout waiting for task.

The timeout doesn't actually affect Synchrony's operation. It will still start normally after that.