Adminhelp hotkey is not actually unbinded via edit hotkeys

## Testmerges
#7536: 'Adds crosshairs to all ranged weapons' by VileBeggar at commit d8bd7437c4
#7766: 'lobby screen update' by harryob at commit 61b278ed88
#7754: 'Adds Watchtowers' by Git-Nivrak at commit 61479579ab
#7802: 'Removes non combat click delay' by Git-Nivrak at commit 2cb21f8fe6
#7607: 'Warden Praetorian rework (tm)' by Red-byte3D at commit 45bdf9761b
#7600: 'SG Frontline Mode & Friends - Yay!!!' by BasilHerb at commit cfdd191899
#7774: 'req console tgui' by harryob at commit 566ef0b36a
#7743: 'Ship Operations Synthetic' by QuickLode at commit ac99415374
#7764: '[TM only] Snowflake_SnowCap' by HIDgamer at commit 364f8cccd3

## Round ID
25488

## Description of the bug
When setting hotkeys via Edit Hotkeys on the preference tab, setting adminhelp to anything does not actually change it. Admin help is still opened when F1 is pressed irregardless if you set it to say F12

## What's the difference with what should have happened?
Adminhelp should not appear when i press F1 (I'm using that key for system macros)

## How do we reproduce this bug?
Open edit hotkeys
Set a different hotkey for adminhelp
Press F1
See error

## Attached logs
```
N/A
```

## Additional details
- Author: Onetoughcreampuff
- Admin: Biolock
- Note: None