fix: revert enable PostgreSQL pageinspect extension

mentioned in commit b6c9b386

mentioned in issue #532 (closed)

mentioned in merge request gitlab-org/build/CNG!838 (merged)

mentioned in merge request gitlab-com/gl-infra/k8s-workloads/gitlab-com!1402 (merged)

mentioned in merge request gitlab-org/charts/gitlab!2302 (merged)

mentioned in merge request gitlab-com/gl-infra/k8s-workloads/gitlab-com!1407 (merged)

mentioned in merge request gitlab-com/gl-infra/k8s-workloads/gitlab-com!1409 (merged)

mentioned in merge request omnibus-gitlab!5827 (merged)

mentioned in merge request gitlab-development-kit!2385 (merged)