Remove unnecessary module parameters

remove cases of required=False, the default
remove str type specifier which, the default
remove supports check mode, not changeable

awx_collection/plugins/modules/tower_notification.py

@@ -390,7 +390,7 @@ def main():
     )
 
     # Create a module for ourselves
-    module = TowerModule(argument_spec=argument_spec, supports_check_mode=True)
+    module = TowerModule(argument_spec=argument_spec)
 
     # Extract our parameters
     name = module.params.get('name')