Fix deleteTablePopup signal warning by adding a stub function

src/mainwindow.cpp

@@ -1470,6 +1470,12 @@ void MainWindow::editTable()
         }
     }
 }
+
+void MainWindow::deleteTablePopup()
+{
+    //TODO ask if user really wants to delte this table
+}
+
 void MainWindow::editTablePopup()
 {
     if (!db.isOpen()){

src/mainwindow.h

@@ -190,7 +190,6 @@ public slots:
     virtual void compact();
     virtual void deleteTable();
     virtual void editTable();
-    virtual void editTablePopup();
     virtual void deleteIndex();
     virtual void copy();
     virtual void paste();
@@ -224,6 +223,8 @@ protected:
 
 protected slots:
     virtual void languageChange();
+    virtual void deleteTablePopup();
+    virtual void editTablePopup();
 
 };