Fix accidental import from PyCharm

Author: lagru

src/docstub-stubs/_report.pyi

@@ -8,7 +8,6 @@ from textwrap import indent
 from typing import Any, ClassVar, Literal, Self, TextIO
 
 import click
-from pre_commit.envcontext import UNSET
 
 from ._cli_help import should_strip_ansi
 from ._utils import naive_natsort_key

src/docstub/_report.py

@@ -7,7 +7,6 @@
 from textwrap import indent
 
 import click
-from pre_commit.envcontext import UNSET
 
 from ._cli_help import should_strip_ansi
 from ._utils import naive_natsort_key
@@ -602,7 +601,7 @@ def pop(self, key, *, default=_UNSET):
         -------
         value : list[Any] or int
         """
-        if key in self._stats or default is UNSET:
+        if key in self._stats or default is self._UNSET:
             return self._stats.pop(key)
         return default