Move computer right click code to the block

Rather than handling right clicks within the block entity code, we now
handle it within the block. Turtles now handle the nametagging
behaviour themselves, rather than overriding canNameWithTag.

projects/common/src/main/java/dan200/computercraft/shared/turtle/blocks/TurtleBlockEntity.java

@@ -87,11 +87,6 @@ public class TurtleBlockEntity extends AbstractComputerBlockEntity implements Ba
         if (!hasMoved()) super.unload();
     }
 
-    @Override
-    protected boolean canNameWithTag(Player player) {
-        return true;
-    }
-
     @Override
     protected double getInteractRange() {
         return 12.0;