CLN: Remove unnecesssary parts of classes (eq, hash)

Author: bashtage

pandas-stubs/core/dtypes/dtypes.pyi

@@ -13,22 +13,20 @@ from pandas._typing import (
 
 from .base import ExtensionDtype as ExtensionDtype
 
-_str = str
-
 def register_extension_dtype(cls: type[ExtensionDtype]) -> type[ExtensionDtype]: ...
 
 class BaseMaskedDtype(ExtensionDtype): ...
 
 class PandasExtensionDtype(ExtensionDtype):
     subdtype = ...
-    str: _str | None = ...
+    str: str | None = ...
     num: int = ...
     shape: tuple[int, ...] = ...
     itemsize: int = ...
     base = ...
     isbuiltin: int = ...
     isnative: int = ...
-    def __hash__(self) -> int: ...
+
     @classmethod
     def reset_cache(cls) -> None: ...
 
@@ -38,42 +36,34 @@ class CategoricalDtype(PandasExtensionDtype, ExtensionDtype):
         categories: Series | Index | list[Any] | None = ...,
         ordered: Ordered = ...,
     ) -> None: ...
-    def __hash__(self) -> int: ...
-    def __eq__(self, other) -> bool: ...
     @property
     def categories(self) -> Index: ...
     @property
     def ordered(self) -> Ordered: ...
 
 class DatetimeTZDtype(PandasExtensionDtype):
     def __init__(
-        self, unit: _str = ..., tz: str | int | dt.tzinfo | None = ...
+        self, unit: str = ..., tz: str | int | dt.tzinfo | None = ...
     ) -> None: ...
     @property
     def unit(self): ...
     @property
     def tz(self): ...
     @property
-    def name(self) -> _str: ...
-    def __hash__(self) -> int: ...
-    def __eq__(self, other) -> bool: ...
+    def name(self) -> str: ...
 
 class PeriodDtype(PandasExtensionDtype):
     def __new__(cls, freq: str | BaseOffset = ...): ...
-    def __hash__(self) -> int: ...
-    def __eq__(self, other) -> bool: ...
     @property
     def freq(self): ...
     @property
-    def name(self) -> _str: ...
+    def name(self) -> str: ...
     @property
     def na_value(self): ...
     def __from_arrow__(self, array): ...
 
 class IntervalDtype(PandasExtensionDtype):
     def __new__(cls, subtype: str | npt.DTypeLike | None = ...): ...
-    def __hash__(self) -> int: ...
-    def __eq__(self, other) -> bool: ...
     @property
     def subtype(self): ...
     @property