chore: Delete ArmCord

[SomeAspy]

I did not see a process for deletion of the package by owners

ArmCord has been DMCA'd by ARM LLC. We have renamed to LegCord. We have started our semver over from 1.0.0 and deleted all prior releases. You can see the announcement here: https://github.com/Legcord/Legcord/releases/tag/v1.0.0

As such, I will submit a Legcord package to replace ArmCord later.

I am a member of the Legcord/ArmCord github organization

• [x] I have read the Contributing Guide.

[SomeAspy]

/verify

[sitiom]

• Resolved in #14323