[mac] disable gohai

As it is misbehaving (eating way more CPU than needed/expected).

Author: degemer

checks/collector.py

@@ -779,6 +779,9 @@ def _run_gohai_processes(self):
         return self._run_gohai(['--only', 'processes'])
 
     def _run_gohai(self, options):
+        # Gohai is disabled on Mac for now
+        if Platform.is_mac():
+            return None
         output = None
         try:
             if not Platform.is_windows():