Protected containers: Remove field "Minimum access level for delete"

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What does this MR do and why?

Protected containers: Remove field "Minimum access level for delete"

• During rollout of the feature "Protected containers", we noticed that the field "Minimum access level for delete" is visible, but the aspect delete protection has not been implemented yet; therefore, the existence / visibility of the field "Minimum access level for delete" might lead to unnecessary confusion.
• This MR intends to remove the field "Minimum access level for delete" from the frontend as suggested here: #480385 (comment 2193605295)

with at Siemens

References

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MR acceptance checklist

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MR Checklist (@gerardo-navarro)

• Changelog entry added, if necessary
• Documentation created/updated via this MR
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the javascript style guides
• Conforms to the database guides

Screenshots or screen recordings

This MR removes the field Minimum access level for delete because the delete protection feature is not implemented yet.

Before	After

How to set up and validate locally

1. Go to the registry settings of a project: http://gdk.test:3000/flightjs/Flight/-/settings/packages_and_registries

Related to #480385 (closed)

app/assets/javascripts/packages_and_registries/settings/project/components/container_protection_rule_form.vue

@@ -12,7 +12,6 @@ import HelpPageLink from '~/vue_shared/components/help_page_link/help_page_link.
 import createProtectionRuleMutation from '~/packages_and_registries/settings/project/graphql/mutations/create_container_protection_rule.mutation.graphql';
 import { s__, __ } from '~/locale';
 
-const GRAPHQL_ACCESS_LEVEL_VALUE_NULL = null;
 const GRAPHQL_ACCESS_LEVEL_VALUE_MAINTAINER = 'MAINTAINER';
 const GRAPHQL_ACCESS_LEVEL_VALUE_OWNER = 'OWNER';
 const GRAPHQL_ACCESS_LEVEL_VALUE_ADMIN = 'ADMIN';
@@ -42,7 +41,6 @@ export default {
       protectionRuleFormData: {
         repositoryPathPattern: '',
         minimumAccessLevelForPush: GRAPHQL_ACCESS_LEVEL_VALUE_MAINTAINER,
-        minimumAccessLevelForDelete: GRAPHQL_ACCESS_LEVEL_VALUE_MAINTAINER,
       },
       updateInProgress: false,
       alertErrorMessages: [],
@@ -66,12 +64,10 @@ export default {
         projectPath: this.projectPath,
         repositoryPathPattern: this.protectionRuleFormData.repositoryPathPattern,
         minimumAccessLevelForPush: this.protectionRuleFormData.minimumAccessLevelForPush,
-        minimumAccessLevelForDelete: this.protectionRuleFormData.minimumAccessLevelForDelete,
       };
     },
     minimumAccessLevelOptions() {
       return [
-        { value: GRAPHQL_ACCESS_LEVEL_VALUE_NULL, text: __('Developer (default)') },
         { value: GRAPHQL_ACCESS_LEVEL_VALUE_MAINTAINER, text: __('Maintainer') },
         { value: GRAPHQL_ACCESS_LEVEL_VALUE_OWNER, text: __('Owner') },
         { value: GRAPHQL_ACCESS_LEVEL_VALUE_ADMIN, text: __('Admin') },
@@ -170,19 +166,6 @@ export default {
       />
     </gl-form-group>
 
-    <gl-form-group
-      :label="s__('ContainerRegistry|Minimum access level for delete')"
-      label-for="input-minimum-access-level-for-delete"
-      :disabled="isFieldDisabled"
-    >
-      <gl-form-select
-        id="input-minimum-access-level-for-delete"
-        v-model="protectionRuleFormData.minimumAccessLevelForDelete"
-        :options="minimumAccessLevelOptions"
-        :disabled="isFieldDisabled"
-      />
-    </gl-form-group>
-
     <div class="gl-flex gl-justify-start">
       <gl-button
         variant="confirm"