Various py311 removals (#7836)

stdlib/importlib/metadata/_meta.pyi

@@ -1,3 +1,4 @@
+import sys
 from collections.abc import Iterator
 from typing import Any, Protocol, TypeVar
 
@@ -14,6 +15,9 @@ class PackageMetadata(Protocol):
 
 class SimplePath(Protocol):
     def joinpath(self) -> SimplePath: ...
-    def __div__(self) -> SimplePath: ...
     def parent(self) -> SimplePath: ...
     def read_text(self) -> str: ...
+    if sys.version_info >= (3, 11):
+        def __truediv__(self) -> SimplePath: ...
+    else:
+        def __div__(self) -> SimplePath: ...