Remove unused chart svg from threat monitoring

- remove all reference to it
- remove svg data in template

ee/app/assets/javascripts/threat_monitoring/components/app.vue

@@ -32,10 +32,6 @@ export default {
       type: Number,
       required: true,
     },
-    chartEmptyStateSvgPath: {
-      type: String,
-      required: true,
-    },
     wafNoDataSvgPath: {
       type: String,
       required: true,

ee/app/assets/javascripts/threat_monitoring/index.js

@@ -18,7 +18,6 @@ export default () => {
     networkPolicyStatisticsEndpoint,
     environmentsEndpoint,
     networkPoliciesEndpoint,
-    chartEmptyStateSvgPath,
     emptyStateSvgPath,
     wafNoDataSvgPath,
     networkPolicyNoDataSvgPath,
@@ -53,7 +52,6 @@ export default () => {
     render(createElement) {
       return createElement(ThreatMonitoringApp, {
         props: {
-          chartEmptyStateSvgPath,
           wafNoDataSvgPath,
           networkPolicyNoDataSvgPath,
           defaultEnvironmentId: parseInt(defaultEnvironmentId, 10),

ee/app/views/projects/threat_monitoring/show.html.haml

@@ -4,7 +4,6 @@
 - default_environment_id = @project.default_environment&.id || -1
 
 #js-threat-monitoring-app{ data: { documentation_path: 'https://docs.gitlab.com/ee/user/application_security/threat_monitoring/',
-  chart_empty_state_svg_path: image_path('illustrations/chart-empty-state.svg'),
   empty_state_svg_path: image_path('illustrations/monitoring/unable_to_connect.svg'),
   waf_no_data_svg_path: image_path('illustrations/firewall-not-detected-sm.svg'),
   network_policy_no_data_svg_path: image_path('illustrations/network-policies-not-detected-sm.svg'),

ee/spec/frontend/threat_monitoring/components/app_spec.js

@@ -14,7 +14,6 @@ import axios from '~/lib/utils/axios_utils';
 const defaultEnvironmentId = 3;
 const documentationPath = '/docs';
 const newPolicyPath = '/policy/new';
-const chartEmptyStateSvgPath = '/chart-svgs';
 const emptyStateSvgPath = '/svgs';
 const wafNoDataSvgPath = '/waf-no-data-svg';
 const networkPolicyNoDataSvgPath = '/network-policy-no-data-svg';
@@ -43,7 +42,6 @@ describe('ThreatMonitoringApp component', () => {
       shallowMount(ThreatMonitoringApp, {
         propsData: {
           defaultEnvironmentId,
-          chartEmptyStateSvgPath,
           emptyStateSvgPath,
           wafNoDataSvgPath,
           networkPolicyNoDataSvgPath,