Fix flake8 minor issues

qt/details_table.py

@@ -7,7 +7,7 @@
 # http://www.gnu.org/licenses/gpl-3.0.html
 
 from PyQt5.QtCore import Qt, QAbstractTableModel
-from PyQt5.QtWidgets import QHeaderView, QTableView, QAbstractItemView
+from PyQt5.QtWidgets import QHeaderView, QTableView
 
 from hscommon.trans import trget
 
@@ -55,7 +55,6 @@ class DetailsTable(QTableView):
         self.setShowGrid(False)
         self.setWordWrap(False)
 
-
     def setModel(self, model):
         QTableView.setModel(self, model)
         # The model needs to be set to set header stuff