Removes ID computer parts (Removes computer hardware) (#71320)

## About The Pull Request

Removes the last computer part in the game: ID parts
Because this is removed, I also removed all computer hardware in the
game, and removed mentions of it in the game.
There is still 'hardware', as in Computer, Tablet, or Laptop.

Computers now all hold one ID slot by default, the only time a second ID
was needed was to use the access of both at once, and for the ID
modification application. This was now replaced with a new UI that only
has one tab, one ID slot:


https://user-images.githubusercontent.com/53777086/202801939-151b783f-75c8-46bf-a6c5-1b57b0d0da8e.mp4

## Why It's Good For The Game

Computer hardware is finally dead 🦀 

## Changelog

🆑
balance: All modular computers now only have one ID slot, and cannot be
upgraded.
qol: The HoP's access application now only has one app, logging in will
directly modify the ID that's in it, making it less confusing to swap
back and forth.
/🆑

code/modules/modular_computers/computers/machinery/modular_computer.dm

@@ -29,13 +29,11 @@
 	var/screen_icon_state_menu = "menu"
 	///Icon state overlay when the computer is powered, but not 'switched on'.
 	var/screen_icon_screensaver = "standby"
-	///Maximal hardware size. Currently, tablets have 1, laptops 2 and consoles 3. Limits what hardware types can be installed.
-	var/max_hardware_size = 0
 	///Amount of steel sheets refunded when disassembling an empty frame of this computer.
 	var/steel_sheet_cost = 10
 	///Light luminosity when turned on
 	var/light_strength = 0
-	///Power usage when the computer is open (screen is active) and can be interacted with. Remember hardware can use power too.
+	///Power usage when the computer is open (screen is active) and can be interacted with.
 	var/base_active_power_usage = 100
 	///Power usage when the computer is idle and screen is off (currently only applies to laptops)
 	var/base_idle_power_usage = 10