Dont pass PWD to go build

Fixes #6051

setup.py

@@ -928,6 +928,8 @@ def run_one(dest: str, **env: str) -> None:
             print(shlex.join(c))
         e = os.environ.copy()
         e.update(env)
+        # https://github.com/kovidgoyal/kitty/issues/6051#issuecomment-1441369828
+        e.pop('PWD', None)
         if for_platform:
             e['CGO_ENABLED'] = '0'
             e['GOOS'] = for_platform[0]