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_license.py

@@ -37,7 +37,6 @@ options:
     tower_oauthtoken:
       description:
         - The Tower OAuth token to use.
-      required: False
       type: str
       version_added: "3.7"
 extends_documentation_fragment: awx.awx.auth