Remove support for clicking in off-hand pocket computers

This was broken/commented out already as part of the 1.20 update. I
don't think this is really going to be easy to add back without a lot of
reflection, so going to remove this feature instead.

Closes #1471.

projects/common/src/client/java/dan200/computercraft/client/gui/NoTermComputerScreen.java

@@ -42,7 +42,6 @@ public class NoTermComputerScreen<T extends AbstractComputerMenu> extends Screen
 
     @Override
     protected void init() {
-        // FIXME: passEvents = true; // Pass mouse vents through to the game's mouse handler.
         // First ensure we're still grabbing the mouse, so the user can look around. Then reset bits of state that
         // grabbing unsets.
         minecraft.mouseHandler.grabMouse();