Remove alert from fork suggestion utils

app/assets/javascripts/repository/components/header_area.vue

...s/repository/components/header_area/blob_button_group.vue

...ository/components/header_area/blob_delete_file_group.vue

...pository/components/header_area/fork_suggestion_modal.vue

...avascripts/repository/queries/blob_controls.query.graphql

...ets/javascripts/repository/utils/fork_suggestion_utils.js

ee/spec/frontend/repository/mock_data.js

locale/gitlab.pot

...pository/components/header_area/blob_button_group_spec.js

...d/repository/components/header_area/blob_controls_spec.js

...ory/components/header_area/blob_delete_file_group_spec.js

...tory/components/header_area/fork_suggestion_modal_spec.js

spec/frontend/repository/components/header_area_spec.js

spec/frontend/repository/mock_data.js

spec/frontend/repository/utils/fork_suggestion_utils_spec.js