Don't print <Shared ...> for a proc mesh (meta-pytorch#1726)

Summary:
Pull Request resolved: meta-pytorch#1726

bit rotted over time, I think....
ghstack-source-id: 320793488

Reviewed By: samlurye, mariusae

Differential Revision: D85977155

fbshipit-source-id: acedfebd3a664176ca7b415611d48879fe082791

Author: zdevito

python/monarch/_src/actor/v1/proc_mesh.py

@@ -288,12 +288,6 @@ async def task(
 
         return pm
 
-    def __repr__(self) -> str:
-        return repr(self._proc_mesh)
-
-    def __str__(self) -> str:
-        return str(self._proc_mesh)
-
     def _spawn_nonblocking(
         self, name: str, Class: Type[TActor], *args: Any, **kwargs: Any
     ) -> TActor: