perf: 用 autoflake 删除无用依赖

没想到居然能意外地大幅提升启动速度

src/heurams/interface/shim.py

@@ -2,7 +2,8 @@
 
 import heurams.interface.widgets as pzw
 import heurams.kernel.puzzles as pz
-import platform, os, sys
+import platform
+import os
 from heurams.context import config_var
 
 puzzle2widget = {