Removed all unused variables i could find, built and tested on a simple
upstart and clicking trough most systems.
Change Loc references to localization.
<!--
This is default collapsed, readers click to expand it and see all your
media
The PR media section can get very large at times, so this is a good way
to keep it clean
The title is written using HTML tags
The title must be within the <summary> tags or you won't see it
-->
<details><summary><h1>Media</h1></summary>
<p>
"using Robust.Shared.Prototypes;"
to
""
"[dependency] private readonly ISpriteComponent"
to
""
</p>
</details>
---
No CL this isn't player facing.
---------
Co-authored-by: ilmenwe <no@mail.com>
