Remove testing from ineligible categories

Remove the testing category from the usage
data spec ineligible categories list.

ee/app/assets/javascripts/vue_shared/metrics_reports/grouped_metrics_reports_app.vue

@@ -88,7 +88,7 @@ export default {
     :loading-text="groupedSummaryText"
     :error-text="groupedSummaryText"
     :has-issues="hasMetrics"
-    :should-emit-toggle-event="true"
+    should-emit-toggle-event
     class="mr-widget-border-top grouped-security-reports mr-report"
     @toggleEvent="handleToggleEvent"
   >

spec/lib/gitlab/usage_data_spec.rb

@@ -1262,7 +1262,7 @@ RSpec.describe Gitlab::UsageData, :aggregate_failures do
     subject { described_class.redis_hll_counters }
 
     let(:categories) { ::Gitlab::UsageDataCounters::HLLRedisCounter.categories }
-    let(:ineligible_total_categories) { %w[source_code testing ci_secrets_management incident_management_alerts snippets terraform] }
+    let(:ineligible_total_categories) { %w[source_code ci_secrets_management incident_management_alerts snippets terraform] }
 
     it 'has all known_events' do
       expect(subject).to have_key(:redis_hll_counters)