Remove unused import to fix Python linter errors

helios/pipeViewer/pipe_view/model/element_value.py

@@ -4,7 +4,7 @@
 # [Element, val].
 from __future__ import annotations
 from bisect import bisect, bisect_left
-from typing import Any, Dict, List, Optional, Tuple, Union, TYPE_CHECKING
+from typing import Any, Dict, List, Optional, Tuple, Union
 from . import content_options as content
 from . import highlighting_utils
 from .element import Element, FakeElement, PropertyValue