Remove useless annotations imports. (#14105)

comfy_execution/graph.py

@@ -1,4 +1,3 @@
-from __future__ import annotations
 from typing import Type, Literal
 
 import nodes

comfy_execution/progress.py

@@ -1,5 +1,3 @@
-from __future__ import annotations
-
 from typing import TypedDict, Dict, Optional, Tuple
 from typing_extensions import override
 from PIL import Image

comfy_execution/validation.py

@@ -1,4 +1,3 @@
-from __future__ import annotations
 from comfy_api.latest import IO