Fix EndpointHandler class name and remove PIL dependencies

handler.py

@@ -3,12 +3,9 @@ import sys
 import json
 import torch
 import numpy as np
-from PIL import Image, ImageDraw
-import io
-import base64
 from typing import Dict, Any, List
 
-class DiffSketchEditHandler:
+class EndpointHandler:
     def __init__(self, path=""):
         self.device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
         
@@ -357,4 +354,4 @@ class DiffSketchEditHandler:
         return svg_content
 
 # Create handler instance
-handler = DiffSketchEditHandler()
+handler = EndpointHandler()