Revert "[MIRROR] Replace all secondary flags with bitflags stored in the flags_2 var" (#2457)

ok you know what yeah i think i'll properly mirror https://github.com/Citadel-Station-13/Citadel-Station-13/pull/2411

code/modules/mob/mob_movement.dm

@@ -274,7 +274,7 @@
 					R.reveal(20)
 					R.stun(20)
 				return
-			if(stepTurf.flags_1 & NOJAUNT_1)
+			if(stepTurf.flags & NOJAUNT)
 				to_chat(L, "<span class='warning'>Holy energies block your path.</span>")
 			else
 				L.loc = get_step(L, direct)