Removes some unnecessary global variables (#16353)

Co-authored-by: AffectedArc07 <25063394+AffectedArc07@users.noreply.github.com>

code/modules/events/money_hacker.dm

@@ -1,8 +1,6 @@
 #define MINIMUM_PERCENTAGE_LOSS 0.5
 #define VARIABLE_LOSS 2 // Invariant: 1 - VARIABLE_LOSS/10 >= MINIMUM_PERCENTAGE_LOSS
 
-GLOBAL_VAR_INIT(account_hack_attempted, 0)
-
 /datum/event/money_hacker
 	var/datum/money_account/affected_account
 	endWhen = 100
@@ -12,8 +10,6 @@ GLOBAL_VAR_INIT(account_hack_attempted, 0)
 	end_time = world.time + 6000
 	if(GLOB.all_money_accounts.len)
 		affected_account = pick(GLOB.all_money_accounts)
-
-		GLOB.account_hack_attempted = 1
 	else
 		kill()
 

code/modules/events/spider_infestation.dm

@@ -1,5 +1,3 @@
-GLOBAL_VAR_INIT(sent_spiders_to_station, 0)
-
 /datum/event/spider_infestation
 	announceWhen	= 400
 	var/spawncount = 1
@@ -8,7 +6,6 @@ GLOBAL_VAR_INIT(sent_spiders_to_station, 0)
 /datum/event/spider_infestation/setup()
 	announceWhen = rand(announceWhen, announceWhen + 50)
 	spawncount = round(num_players() * 0.8)
-	GLOB.sent_spiders_to_station = 1
 
 /datum/event/spider_infestation/announce()
 	if(successSpawn)