use Icon instead of QIcon

src/plugins/timediffplugin.py

@@ -1,14 +1,8 @@
 from typing import Optional
-
-from PySide6.QtGui import QIcon
-
 from src.pluginbase import PluginBase
 from src.plugins.domain.raction import RAction
-from src.plugins.logfile.filterwidget import FilterWidget
 from src.plugins.logfile.preprocesslineshook import PreProcessLinesHook
 from src.plugins.timediff.time_diff_pre_process_lines_hook import TimeDiffPreProcessLinesHook
-from src.i18n import _
-
 
 class TimeDiffPlugin(PluginBase):
     def __init__(self):