revert "ci: add go mod tidy & gomod2nix check CI"

This reverts commit ada8bf645f471d0aff466d4b91beb1d07dc9f4dd.

Signed-off-by: oppiliappan <[e-mail]>

.tangled/workflows/test.yml

···
     command: |
       mkdir -p appview/pages/static; touch appview/pages/static/x
 
-  - name: run go mod tidy
-    command: go mod tidy
-
-  - name: run gomod2nix
-    command: |
-      HOME=$(mktemp -d)
-      echo $HOME
-      nix run .#gomod2nix
-
-  - name: verify no changes
-    command: |
-      if ! git diff --quiet; then
-        echo "Error: gomod2nix produced changes. Please commit the updated files."
-        git diff
-        exit 1
-      fi
-
   - name: run linter
     environment:
       CGO_ENABLED: 1