Remove empty __init__ methods from classes with 0 parents (#8907)

stubs/urllib3/urllib3/response.pyi

@@ -13,7 +13,6 @@ from ._collections import HTTPHeaderDict
 _TYPE_BODY: TypeAlias = bytes | IO[Any] | Iterable[bytes] | str
 
 class DeflateDecoder:
-    def __init__(self) -> None: ...
     def __getattr__(self, name: str) -> Any: ...
     def decompress(self, data: bytes) -> bytes: ...
 
@@ -23,14 +22,12 @@ class GzipDecoderState:
     SWALLOW_DATA: Literal[2]
 
 class GzipDecoder:
-    def __init__(self) -> None: ...
     def __getattr__(self, name: str) -> Any: ...
     def decompress(self, data: bytes) -> bytes: ...
 
 # This class is only available if
 # `brotli` is available for import.
 class BrotliDecoder:
-    def __init__(self) -> None: ...
     def flush(self) -> bytes: ...
 
 class MultiDecoder: