[MIRROR] Removes more NTNet from Tablets and removes a ton of dead code [MDB IGNORE] (#19997)

* Removes more NTNet from Tablets and removes a ton of dead code (#74085)

## About The Pull Request

Removes NtNet softwaredownload/communication because they did nothing,
so this also removes the feature to shut them off from Wirecarp

I removed tablets from being added to networks, Tablets already generate
logs for actions they do, which is already enough for the effects it has
in-game (just being visible to Wirecarp), once NtNet is deleted from
everything else then we can move it to ModPCs and limit logging to only
ModPC actions.

Fixes shutting off ntnet relays from Wirecarp, now you can properly shut
off Ntnet, and the warning that it kicks you out of the program is now
true.

Gives the Holodeck it's own network root define and fixes Syndicate
network showing up on Wirecarp

Wirecarp's PDA logs now shows the source of an action

## Why It's Good For The Game

Moves ModPCs further from NTNet so we can move towards deleting it
entirely
Makes Wirecarp more responsible and trustworthy
Removes useless stuff that never gets used, simplifying a overthought
overcomplicated system.

## Changelog

🆑
balance: Wirecarp now properly shuts off NtNet remotely.
balance: Wirecarp now shows the source of a PDA that does an action.
fix: Wirecarp can no longer be used to see if Nukies exist through their
networks.
del: Removes Software downloading and communication Ntnet networks, as
they were pretty worthless.
/🆑

* Removes more NTNet from Tablets and removes a ton of dead code

---------

Co-authored-by: John Willard <53777086+JohnFulpWillard@users.noreply.github.com>

code/controllers/subsystem/modular_computers.dm

@@ -9,11 +9,6 @@ SUBSYSTEM_DEF(modular_computers)
 	///List of all chat channels created by Chat Client.
 	var/list/chat_channels = list()
 
-	///Boolean on whether downloading software works.
-	var/setting_softwaredownload = TRUE
-	///Boolean on whether downloading communication apps like the Chat client works.
-	var/setting_communication = TRUE
-
 	///Boolean on whether the IDS warning system is enabled
 	var/intrusion_detection_enabled = TRUE
 	///Boolean to show a message warning if there's an active intrusion for Wirecarp users.
@@ -48,34 +43,6 @@ SUBSYSTEM_DEF(modular_computers)
 		return TRUE
 	return FALSE
 
-/datum/controller/subsystem/modular_computers/proc/toggle_function(function)
-	if(!function)
-		return
-	function = text2num(function)
-	switch(function)
-		if(NTNET_SOFTWAREDOWNLOAD)
-			setting_softwaredownload = !setting_softwaredownload
-			SSnetworks.add_log("Configuration Updated. Wireless network firewall now [setting_softwaredownload ? "allows" : "disallows"] connection to software repositories.")
-		if(NTNET_COMMUNICATION)
-			setting_communication = !setting_communication
-			SSnetworks.add_log("Configuration Updated. Wireless network firewall now [setting_communication ? "allows" : "disallows"] instant messaging and similar communication services.")
-
-///Checks whether NTNet is available for a specific function, checking NTNet relays and shutdowns. If none is passed, none is needed.
-/datum/controller/subsystem/modular_computers/proc/check_function(specific_action = NONE)
-	// No relays found. NTNet is down
-	if(!length(ntnet_relays))
-		return FALSE
-	// Check all relays. If we have at least one working relay, network is up.
-	if(!check_relay_operation())
-		return FALSE
-
-	switch(specific_action)
-		if(NTNET_SOFTWAREDOWNLOAD)
-			return setting_softwaredownload
-		if(NTNET_COMMUNICATION)
-			return setting_communication
-	return TRUE
-
 ///Attempts to find a new file through searching the available stores with its name.
 /datum/controller/subsystem/modular_computers/proc/find_ntnet_file_by_name(filename)
 	for(var/datum/computer_file/program/programs as anything in available_station_software + available_antag_software)

code/controllers/subsystem/processing/networks.dm

@@ -272,9 +272,11 @@ SUBSYSTEM_DEF(networks)
 		// Anything in Centcom is completely isolated
 		// Special case for holodecks.
 		if(istype(A,/area/station/holodeck))
-			A.network_root_id = "HOLODECK" // isolated from the station network
+			A.network_root_id = HOLODECK_NETWORK_ROOT // isolated from the station network
 		else if(SSmapping.level_trait(A.z, ZTRAIT_CENTCOM))
 			A.network_root_id = CENTCOM_NETWORK_ROOT
+		else if(SSmapping.level_trait(A.z, ZTRAIT_RESERVED))
+			A.network_root_id = SYNDICATE_NETWORK_ROOT
 		// Otherwise the default is the station
 		else
 			A.network_root_id = STATION_NETWORK_ROOT