Revert "Login and UKI updates (#1860)"

This reverts commit f2021a95a4.

install/login/all.sh

@@ -1,4 +1,4 @@
 run_logged $OMARCHY_INSTALL/login/plymouth.sh
-run_logged $OMARCHY_INSTALL/login/default-keyring.sh
-run_logged $OMARCHY_INSTALL/login/sddm.sh
 run_logged $OMARCHY_INSTALL/login/limine-snapper.sh
+run_logged $OMARCHY_INSTALL/login/enable-mkinitcpio.sh
+run_logged $OMARCHY_INSTALL/login/alt-bootloaders.sh