Drop ArchLinux support

[ScriptAutomate]

Arch Linux is being dropped by Salt Project because:

• No Salt Project Core Devs use Arch Linux, increasing maintainership burden of a small team
• Fedora helps provide the bleeding edge insight that the Salt Project team needs in order to prepare Salt for future updates
• Salt Project doesn't currently package the Salt Project Arch Linux distribution, as it is maintained by community members. We only use Arch Linux in CI/CD
• Removing Arch Linux from CI/CD will reduce infra cost