Merge branch 'justin_ho-remove-integration-settings-form-class' into 'master'

Remove unused .integration-settings-form class

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/142895



Merged-by: Manoj M J <mmj@gitlab.com>
Approved-by: Tomas Vik (OOO back on 2024-01-30) <tvik@gitlab.com>
Approved-by: Zack Cuddy <zcuddy@gitlab.com>
Approved-by: John Hope <jhope@gitlab.com>
Co-authored-by: Justin Ho Tuan Duong <hduong@gitlab.com>