Revert "Require signed packages from the Omarchy repository"

Reverts 39cffb8f, which landed on quattro through an accidental direct
push. The change returns for review as a pull request.

default/pacman/pacman-edge.conf

@@ -26,6 +26,7 @@ Include = /etc/pacman.d/mirrorlist
 Include = /etc/pacman.d/mirrorlist
 
 [omarchy]
+SigLevel = Optional TrustAll
 Server = https://pkgs.omarchy.org/edge/$arch
 
 # Repositories for debug symbol packages.

default/pacman/pacman-rc.conf

@@ -26,4 +26,5 @@ Include = /etc/pacman.d/mirrorlist
 Include = /etc/pacman.d/mirrorlist
 
 [omarchy]
+SigLevel = Optional TrustAll
 Server = https://pkgs.omarchy.org/edge/$arch

default/pacman/pacman-stable.conf

@@ -26,4 +26,5 @@ Include = /etc/pacman.d/mirrorlist
 Include = /etc/pacman.d/mirrorlist
 
 [omarchy]
+SigLevel = Optional TrustAll
 Server = https://pkgs.omarchy.org/stable/$arch