Remove gl-button new style flag

app/assets/javascripts/monitoring/components/dashboard.vue

@@ -416,7 +416,6 @@ export default {
             <gl-button
               v-if="showRearrangePanelsBtn"
               :pressed="isRearrangingPanels"
-              new-style
               variant="default"
               class="mr-2 mt-1 js-rearrange-button"
               @click="toggleRearrangingPanels"
@@ -426,7 +425,6 @@ export default {
             <gl-button
               v-if="addingMetricsAvailable"
               v-gl-modal="$options.addMetric.modalId"
-              new-style
               variant="outline-success"
               class="mr-2 mt-1 js-add-metric-button"
             >

ee/app/assets/javascripts/security_dashboard/components/instance_security_dashboard.vue

@@ -94,7 +94,6 @@ export default {
       <h2 class="page-title">{{ s__('SecurityDashboard|Security Dashboard') }}</h2>
       <gl-button
         v-if="isInitialized"
-        new-style
         class="page-title-controls js-project-selector-toggle"
         :variant="toggleButtonProps.variant"
         @click="toggleProjectSelector"
@@ -125,7 +124,7 @@ export default {
             >.
           </template>
           <template #actions>
-            <gl-button new-style variant="success" @click="toggleProjectSelector">
+            <gl-button variant="success" @click="toggleProjectSelector">
               {{ s__('SecurityDashboard|Add projects') }}
             </gl-button>
           </template>

ee/app/assets/javascripts/security_dashboard/components/project_manager.vue

@@ -81,7 +81,6 @@ export default {
           <div class="mb-3">
             <gl-button
               :disabled="!hasProjectsSelected"
-              new-style
               variant="success"
               @click="addProjectsAndClearSearchResults"
             >