Removed dependencies on pthread from frcsim.

Because we want to be able to compile/run wpilibC++Sim on
windows, we would prefer not to require a windows version
of pthread. This commit moves from pthread constructs to
standard library constructs.

Change-Id: I12392a8910189537dd067afdf017e4994d570a66

wpilibc/wpilibC++/src/Error.cpp

@@ -12,7 +12,6 @@
 #include <cstring>
 #include <cstdlib>
 #include <stdint.h>
-#include "HAL/Task.hpp"
 
 #include "DriverStation.h"
 #include "Timer.h"
@@ -67,8 +66,6 @@ void Error::Set(Code code, const char* contextMessage, const char* filename,
     m_timestamp = GetTime();
     Report();
   }
-
-  if (m_suspendOnErrorEnabled) suspendTask(nullptr);
 }
 
 void Error::Report() {