Remove duplicate definitions (#8483)

stdlib/_compression.pyi

@@ -20,10 +20,6 @@ class DecompressReader(RawIOBase):
         trailing_error: type[Exception] | tuple[type[Exception], ...] = ...,
         **decomp_args: Any,
     ) -> None: ...
-    def readable(self) -> bool: ...
-    def close(self) -> None: ...
-    def seekable(self) -> bool: ...
     def readinto(self, b: WriteableBuffer) -> int: ...
     def read(self, size: int = ...) -> bytes: ...
     def seek(self, offset: int, whence: int = ...) -> int: ...
-    def tell(self) -> int: ...