constants: rm unused

GUI/View/Tool/mainwindow_constants.h

@@ -22,14 +22,11 @@ namespace GUI::Constants {
 // Settings groups
 const char S_MAINWINDOW[] = "MainWindow";
 const char S_JOBMESSAGEPANEL[] = "JobMessagePanel";
-const char S_MASKEDITOR[] = "MaskEditor";
-const char S_MATERIALEDITOR[] = "MaterialEditor";
 const char S_SESSIONMODELVIEW[] = "SessionModelView";
 
 // Settings keys
 const char S_WINDOWSIZE[] = "size";
 const char S_WINDOWPOSITION[] = "pos";
-const char S_SPLITTERSIZE[] = "SplitterSize";
 const char S_VIEWISACTIVE[] = "ViewIsActive";
 
 const char S_JOBMESSAGEPANEL_SIZE[] = "size";