Enable some stricter mypy settings on Lib/_pyrepl (#119077)

Author: AlexWaygood

Lib/_pyrepl/mypy.ini

@@ -10,18 +10,15 @@ platform = linux
 pretty = True
 
 # Enable most stricter settings
-enable_error_code = ignore-without-code
+enable_error_code = ignore-without-code,redundant-expr
 strict = True
 
 # Various stricter settings that we can't yet enable
 # Try to enable these in the following order:
-disallow_any_generics = False
 disallow_untyped_calls = False
 disallow_untyped_defs = False
 check_untyped_defs = False
 
-disable_error_code = return
-
 # Various internal modules that typeshed deliberately doesn't have stubs for:
 [mypy-_abc.*,_opcode.*,_overlapped.*,_testcapi.*,_testinternalcapi.*,test.*]
 ignore_missing_imports = True