Revert "try store mounted read-only"

This reverts commit cc4d4c280b.

.woodpecker/cd.yaml

@@ -13,9 +13,7 @@ steps:
         mkdir -p ~/.ssh
         echo "$CD_SSH_KEY" > ~/.ssh/id_ed25519
         chmod 600 ~/.ssh/id_ed25519
-      - nix-shell --eval-store local --store unix:///mnt/nix/var/nix/daemon-socket/socket?root=/mnt --run 'eval "$(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
+      - nix build --extra-experimental-features 'nix-command flakes' .#checks.x86_64-linux.deployment-basic -L
-    volumes:
-      - /nix:/mnt/nix:ro

.woodpecker/update.yaml

@@ -8,6 +8,7 @@ when:
 steps:
   - name: lockfile
     image: nixos/nix
+    # image: nixos/nix
     commands:
       - nix-shell --run "npins --verbose update"
       # - name: Create PR