wxGUI/import: blacklist -l/-f flags

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@68976 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/modules/import_export.py

@@ -628,7 +628,7 @@ class OgrImportDialog(ImportDialog):
 
     def _getBlackListedFlags(self):
         """Get flags which will not be showed in Settings page"""
-        return ['overwrite', 'o']
+        return ['overwrite', 'o', 'l', 'f']
 
 
 class GdalOutputDialog(wx.Dialog):