Revert typeshed ctypes change (#14128)

Since the plugin provides superior type checking:
#13987 (comment)

mypy/typeshed/stdlib/ctypes/__init__.pyi

@@ -266,11 +266,7 @@ class Array(Generic[_CT], _CData):
     def _type_(self) -> type[_CT]: ...
     @_type_.setter
     def _type_(self, value: type[_CT]) -> None: ...
-    # Note: only available if _CT == c_char
-    @property
-    def raw(self) -> bytes: ...
-    @raw.setter
-    def raw(self, value: ReadableBuffer) -> None: ...
+    raw: bytes  # Note: only available if _CT == c_char
     value: Any  # Note: bytes if _CT == c_char, str if _CT == c_wchar, unavailable otherwise
     # TODO These methods cannot be annotated correctly at the moment.
     # All of these "Any"s stand for the array's element type, but it's not possible to use _CT