Remove duplicate constant definitions

ee/app/assets/javascripts/security_dashboard/store/modules/filters/constants.js

 import { s__ } from '~/locale';
 
-export const SEVERITY_LEVELS = {
-  critical: s__('severity|Critical'),
-  high: s__('severity|High'),
-  medium: s__('severity|Medium'),
-  low: s__('severity|Low'),
-  unknown: s__('severity|Unknown'),
-  info: s__('severity|Info'),
-  undefined: s__('severity|Undefined'),
-};
-
-export const REPORT_TYPES = {
-  container_scanning: s__('ciReport|Container Scanning'),
-  dast: s__('ciReport|DAST'),
-  dependency_scanning: s__('ciReport|Dependency Scanning'),
-  sast: s__('ciReport|SAST'),
-};
-
 export const ALL = 'all';
+
 export const BASE_FILTERS = {
   severity: {
     name: s__('ciReport|All severities'),

ee/app/assets/javascripts/security_dashboard/store/modules/filters/state.js

-import { SEVERITY_LEVELS, REPORT_TYPES, BASE_FILTERS } from './constants';
+import { BASE_FILTERS } from './constants';
+import { SEVERITY_LEVELS, REPORT_TYPES } from '../../constants';
 import { s__ } from '~/locale';
 
 const optionsObjectToArray = obj => Object.entries(obj).map(([id, name]) => ({ id, name }));
+const severityLevelsWithoutNone = { ...SEVERITY_LEVELS };
+delete severityLevelsWithoutNone.none;
 
 export default () => ({
   filters: [
     {
       name: s__('SecurityDashboard|Severity'),
       id: 'severity',
-      options: [BASE_FILTERS.severity, ...optionsObjectToArray(SEVERITY_LEVELS)],
+      options: [BASE_FILTERS.severity, ...optionsObjectToArray(severityLevelsWithoutNone)],
       hidden: false,
       selection: new Set([BASE_FILTERS.severity.id]),
     },