Revert "try store mounted read-only"

This reverts commit cc4d4c280b.

.woodpecker/cd.yaml

@@ -18,9 +18,7 @@ steps:
         echo 'agent started'
         ssh-add ~/.ssh/id_ed25519
         echo 'key added'
-      - nix-shell --eval-store local --store unix:///mnt/nix/var/nix/daemon-socket/socket?root=/mnt --run 'eval "$(ssh-agent -s)" && ssh-add ~/.ssh/id_ed25519 && ssh-agent -s && SHELL=$(which bash) nixops4 apply -v default'
+      - nix-shell --run 'eval "$(ssh-agent -s)" && ssh-add ~/.ssh/id_ed25519 && ssh-agent -s && SHELL=$(which bash) nixops4 apply -v default'
     environment:
       CD_SSH_KEY:
         from_secret: cd_ssh_key
-    volumes:
-      - /nix:/mnt/nix:ro

.woodpecker/check-deployment-basic.yaml

@@ -10,6 +10,4 @@ steps:
   - name: check-deployment-basic
     image: nixos/nix
     commands:
-      - nix build --eval-store local --store unix:///mnt/nix/var/nix/daemon-socket/socket?root=/mnt --extra-experimental-features 'nix-command flakes' .#checks.x86_64-linux.deployment-basic -L
-    volumes:
-      - /nix:/mnt/nix:ro
+      - nix build --extra-experimental-features 'nix-command flakes' .#checks.x86_64-linux.deployment-basic -L