Remove the "End scenario" menu item at the end of tutorial S1.

data/campaigns/tutorial/scenarios/1_Tutorial.cfg

@@ -1190,6 +1190,9 @@ Now, Li’sar, I will leave you with more dummies to practice on! After that, we
             caption= _"Victory"
             message= _"After your victory notice, the map will be grayed out to indicate that the scenario is over, but you will still be able to examine the final positions and state of your troops and any surviving enemies. This is called <i>linger mode</i>. When you’re finished, click the <b>End Scenario</b> button to go on the next scenario in the campaign."
         [/message]
+        [clear_menu_item]
+            id="skip_item"
+        [/clear_menu_item]
         {CLEAR_VARIABLE next_turn}
         {CLEAR_VARIABLE target_hex}
     [/event]