Remove unused angular controllers

Author: GilbertCherrie

app/javascript/oldjs/controllers/cloud_volume/cloud_volume_form_controller.js

@@ -3,7 +3,6 @@ require('./alerts/alerts_overview_controller.js');
 require('./alerts/edit_alert_dialog_controller.js');
 require('./buttons/button_group_controller.js');
 require('./catalog/catalog_item_form_controller.js');
-require('./cloud_volume/cloud_volume_form_controller.js');
 require('./container_dashboard/card/card-module.js');
 require('./container_dashboard/util.js');
 require('./container_dashboard/util/dashboard-utils-factory.js');
@@ -13,10 +12,8 @@ require('./dialog_user/dialog_user_controller.js');
 require('./dialog_user/dialog_user_reconfigure_controller.js');
 require('./ems_keypair/ems_keypair_controller.js');
 require('./error_modal_controller.js');
-require('./fonticon_picker_controller.js');
 require('./host/host_form_controller.js');
 require('./miq_ae_class/ae_inline_method_selection_controller.js');
-require('./mixins/charts-mixin.js');
 require('./ops/pglogical_replication_form_controller.js');
 require('./ops/tenant_quota_form_controller.js');
 require('./playbook-reusable-code-mixin.js');