fix: remove antergos-release from Default group (not yet in repo)

antergos-release PKGBUILD exists but the package was never built
and deployed to the GitHub Pages repo. The packages module tried to
install it and pacman returned error code 1 (package not found).
Remove it until the CI builds and deploys it.

Also remove try_remove: artix-release from basestrap since it's not
needed without antergos-release in the Default group.

iso-profiles/antergos/live-overlay/etc/calamares-online/modules/netinstall.yaml

@@ -10,7 +10,6 @@
     - grub
     - efibootmgr
     - sudo
-    - antergos-release
     - antergos-next-keyring
     - antergos-wallpapers
     - antergos-grub-theme

iso-profiles/antergos/live-overlay/etc/calamares/modules/basestrap.conf

@@ -32,5 +32,3 @@ operations:
   - install:
     - base
     - antergos-next-keyring
-  - try_remove:
-    - artix-release

iso-profiles/antergos/live-overlay/etc/calamares/modules/netinstall.yaml

@@ -10,7 +10,6 @@
     - grub
     - efibootmgr
     - sudo
-    - antergos-release
     - antergos-next-keyring
     - antergos-wallpapers
     - antergos-grub-theme