refactor: comply with mypy `redudant-expr`

src/poetry/repositories/pool.py

@@ -46,9 +46,7 @@ class Pool(Repository):
         return self._has_primary_repositories
         return self._has_primary_repositories
 
 
     def has_repository(self, name: str) -> bool:
     def has_repository(self, name: str) -> bool:
-        name = name.lower() if name is not None else None
-
-        return name in self._lookup
+        return name.lower() in self._lookup
 
 
     def repository(self, name: str) -> Repository:
     def repository(self, name: str) -> Repository:
         if name is not None:
         if name is not None:

src/poetry/utils/authenticator.py

@@ -214,7 +214,7 @@ class Authenticator:
                     raise e
                     raise e
             else:
             else:
                 if resp.status_code not in [502, 503, 504] or is_last_attempt:
                 if resp.status_code not in [502, 503, 504] or is_last_attempt:
-                    if resp.status_code is not None and raise_for_status:
+                    if raise_for_status:
                         resp.raise_for_status()
                         resp.raise_for_status()
                     return resp
                     return resp