Remove unused GlToast from container registry bundle

GlToast component is imported within container registry and the harbor registry codebase.

This is unused so it can be removed. This should reduce the bundle size

changed milestone to %17.7

added Category:Container Registry devopspackage frontend groupcontainer registry maintenancerefactor pipelinetier-3 pipeline:mr-approved pipeline:run-e2e-omnibus-once rspec:slow test detected sectionci typemaintenance labels

removed pipeline:mr-approved label

removed pipeline:run-e2e-omnibus-once label

removed rspec:slow test detected label

removed pipelinetier-3 label

changed the description

assigned to @rchanila

added workflowverification label

mentioned in merge request !173996 (merged)

set weight to 1

added frontend-weight1 label

Removes unused GlToast from container registry ... (!173996 - merged) is merged, closing

closed

added workflowcomplete label and removed workflowverification label