modify test approach

Author: chrissimpkins

tests/test_widgets.py

@@ -6,10 +6,9 @@
 from slice.ui.widgets import DragDropLineEdit
 
 
-def test_drag_drop_line_edit(qtbot):
+def test_drag_drop_line_edit():
     widget1 = QWidget()
     widget2 = DragDropLineEdit(widget1)
-    qtbot.addWidget(widget2)
     # placeholder text
     assert (
         widget2.placeholderText() == "Drop a variable font here or click the Open button"