Clean up a lot of obfuscation helpers and impls

This fixes a bug with obfuscation helpers for attack cooldown
But every other change should stay the same.

Cleaning up a lot of helpers that pointed to already unobfuscated items.
Also adds final to many of the obfhelpers to assist with inlining.

This is pretty much a patch maintenance

Spigot-Server-Patches/Expose-Arrow-getItemStack.patch

@@ -12,8 +12,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
          }
      }
  
-+    public ItemStack getOriginalItemStack() { return getItemStack(); }  // Paper - OBFHelper
-+
++    public final ItemStack getOriginalItemStack() { return getItemStack(); }  // Paper - OBFHELPER - exists purely due to overrides all as protected and dont want to change them all
      protected abstract ItemStack getItemStack();
  
      @Override