Remove delayed group/project deletion settings from gitlab_application_settings resource

Removes the following settings from the gitlab_application_settings resource as they were removed in GitLab 16.0:

• delayed_project_deletion
• delayed_group_deletion

Related Issue and MRs:

• Remove `delayed_project_deletion` and `delayed_... (gitlab#391942 - closed)
• BE changes, feature flagged: To always perform ... (gitlab!113332 - merged)
• Remove FF `always_perform_delayed_deletion` (gitlab!120476 - merged)

Ref: !1201 (merged)