Change spike behaviour in Sonic 2

Hello shadow05 here I'm starting a series on how to port certain beta elements of sonic 2 into the final version

Here's the part 1

Part 1 The spindash

Today I'm going to show how to port the Spike behviour this guide is based off the sonic 1 guide and like part 1 this will be short

So all you have to do is delete these two lines

	tst.w	invulnerable_time(a1)	; is character invulnerable?
	bne.s	+	; rts		; if yes, branch

Yep that's it