refactor: remove redundant QTimer import in main_app

bec_widgets/applications/launch_window.py

@@ -5,7 +5,7 @@ import xml.etree.ElementTree as ET
 from typing import TYPE_CHECKING, Callable
 
 from bec_lib.logger import bec_logger
-from qtpy.QtCore import Qt, Signal  # type: ignore
+from qtpy.QtCore import Qt, QTimer, Signal  # type: ignore
 from qtpy.QtGui import QFontMetrics, QPainter, QPainterPath, QPixmap
 from qtpy.QtWidgets import (
     QApplication,
@@ -496,7 +496,6 @@ class LaunchWindow(BECMainWindow):
 
     @staticmethod
     def _notify_launcher_ready(window: QWidget) -> None:
-        from qtpy.QtCore import QTimer
 
         from bec_widgets.utils.launcher_ready import notify_launcher_ready
 

bec_widgets/applications/main_app.py

@@ -434,8 +434,6 @@ def main():  # pragma: no cover
     startup_profiler.mark("window shown")
 
     # First event-loop iteration -> the window is actually painted/interactive.
-    from qtpy.QtCore import QTimer
-
     QTimer.singleShot(0, lambda: startup_profiler.mark("interactive", final=True))
 
     sys.exit(app.exec())