fix: [1.29] Remove command should not be primary command

* Card ID: CCT-403
* There is no reason to keep this command as primary command

src/subscription_manager/cli_command/remove.py

@@ -65,7 +65,11 @@ def _command_name(self):
         return "remove"
 
     def _primary(self):
-        return True
+        """
+        This command is deprecated and no-op. It used to be primary command, but
+        there is no reason to have keep this command as primary command anymore.
+        """
+        return False
 
     def _validate_options(self):
         if self.options.serials: