Revert "Change final stretch song to Piercing the Sky"

Upon further discussion it was decided to keep the soundtrack as originally
shipped, instead of changing it after the fact.

This reverts commit cf51379097.

desktop_version/src/Game.cpp

@@ -1478,7 +1478,7 @@ void Game::updatestate(void)
             //Init final stretch
             state++;
             music.playef(9);
-            music.play(14);
+            music.play(2);
             obj.flags[72] = true;
 
             screenshake = 10;

desktop_version/src/TerminalScripts.cpp

@@ -434,7 +434,7 @@ void scriptclass::loadother(const char* t)
         "speak_active",
         "endtext",
 
-        "play(14)",
+        "play(2)",
         "changemood(player,0)",
 
         "endcutscene()",