[MIRROR] Removes tablet cell parts [MDB IGNORE] (#17498)

* Removes tablet cell parts (#71078)

## About The Pull Request

Removes cell parts and cell part cells, now tablets directly stole a
power cell in them, and uses regular stock cells like every other
machine in the game. This also makes it less confusing because people
are more used to stock cells over computer cells. Because cells
generally hold more power than computer ones, I bumped up the active
power usage from 50 to 75.

## Why It's Good For The Game

We are nearly finished removing all parts, holy cr*p

## Changelog

🆑
balance: Tablets now use regular cells instead of computer cells.
balance: Tablets no longer need a power cell component to hold power
cells.
/🆑

* Removes tablet cell parts

* Feex

Co-authored-by: John Willard <53777086+JohnFulpWillard@users.noreply.github.com>
Co-authored-by: GoldenAlpharex <jerego1234@hotmail.com>

code/modules/modular_computers/computers/item/processor.dm

@@ -25,6 +25,7 @@
 	// Obtain reference to machinery computer
 	machinery_computer = loc
 	machinery_computer.cpu = src
+	internal_cell = machinery_computer.internal_cell
 	hardware_flag = machinery_computer.hardware_flag
 	max_hardware_size = machinery_computer.max_hardware_size
 	steel_sheet_cost = machinery_computer.steel_sheet_cost