qtvcp -action button: quiet 'no action' warning

move it to debug rather then error.

Author: c-morley

lib/python/qtvcp/widgets/action_button.py

@@ -730,7 +730,7 @@ def action(self, state=None):
             if state is not None:
                 self.safecheck(state)
             if not self._python_command:
-                LOG.error('No action recognised')
+                LOG.debug('No action recognised for {}'.format(self.objectName()))
 
 
         # This is check after because action buttons can do an action plus