Delete some unused code (#13276)

* Delete some unused code

* lint

Author: hauntsaninja

mypy/checkstrformat.py

@@ -122,25 +122,6 @@ def compile_new_format_re(custom_spec: bool) -> Pattern[str]:
 FORMAT_RE_NEW_CUSTOM: Final = compile_new_format_re(True)
 DUMMY_FIELD_NAME: Final = "__dummy_name__"
 
-# Format types supported by str.format() for builtin classes.
-SUPPORTED_TYPES_NEW: Final = {
-    "b",
-    "c",
-    "d",
-    "e",
-    "E",
-    "f",
-    "F",
-    "g",
-    "G",
-    "n",
-    "o",
-    "s",
-    "x",
-    "X",
-    "%",
-}
-
 # Types that require either int or float.
 NUMERIC_TYPES_OLD: Final = {"d", "i", "o", "u", "x", "X", "e", "E", "f", "F", "g", "G"}
 NUMERIC_TYPES_NEW: Final = {"b", "d", "o", "e", "E", "f", "F", "g", "G", "n", "x", "X", "%"}

mypy/errorcodes.py

@@ -3,13 +3,10 @@
 These can be used for filtering specific errors.
 """
 
-from typing import Dict, List
+from typing import Dict
 
 from typing_extensions import Final
 
-# All created error codes are implicitly stored in this list.
-all_error_codes: List["ErrorCode"] = []
-
 error_codes: Dict[str, "ErrorCode"] = {}
 
 

mypy/message_registry.py

@@ -141,9 +141,6 @@ def format(self, *args: object, **kwargs: object) -> "ErrorMessage":
     "Function {} could always be true in boolean context", code=codes.TRUTHY_BOOL
 )
 NOT_CALLABLE: Final = "{} not callable"
-PYTHON2_PRINT_FILE_TYPE: Final = (
-    'Argument "file" to "print" has incompatible type "{}"; expected "{}"'
-)
 TYPE_MUST_BE_USED: Final = "Value of type {} must be used"
 
 # Generic

mypy/messages.py

@@ -942,9 +942,6 @@ def does_not_return_value(self, callee_type: Optional[Type], context: Context) -
         else:
             self.fail("Function does not return a value", context, code=codes.FUNC_RETURNS_VALUE)
 
-    def underscore_function_call(self, context: Context) -> None:
-        self.fail('Calling function named "_" is not allowed', context)
-
     def deleted_as_rvalue(self, typ: DeletedType, context: Context) -> None:
         """Report an error about using an deleted type as an rvalue."""
         if typ.source is None: