ci: remove golangci-lint checks from CI pipeline

Removed the golangci-lint installation and linting step from the GitHub Actions workflow, simplifying the CI pipeline.

.github/workflows/ci-cd.yml

@@ -20,12 +20,6 @@ jobs:
       - name: Download dependencies
         run: go mod download
 
-      - name: Install golangci-lint
-        run: curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b /usr/local/bin latest
-
-      - name: Run golangci-lint
-        run: golangci-lint run --timeout=3m
-
       - name: Check formatting
         run: |
           if [ "$(gofmt -l $(find . -name '*.go' -not -path './vendor/*'))" ]; then