Remove unnecessary styling for sidebar components

- there is a class that manages this now

app/assets/javascripts/vue_shared/alert_details/components/sidebar/sidebar_assignees.vue

@@ -195,7 +195,6 @@ export default {
   <div
     class="alert-assignees gl-py-5 gl-w-70p"
     :class="{ 'gl-border-b-1 gl-border-b-solid gl-border-b-gray-100': !sidebarCollapsed }"
-    style="width: 70%"
   >
     <template v-if="sidebarCollapsed">
       <div

app/assets/javascripts/vue_shared/alert_details/components/sidebar/sidebar_status.vue

@@ -68,7 +68,6 @@ export default {
   <div
     class="alert-status gl-py-5 gl-w-70p"
     :class="{ 'gl-border-b-1 gl-border-b-solid gl-border-b-gray-100': !sidebarCollapsed }"
-    style="width: 70%"
   >
     <template v-if="sidebarCollapsed">
       <div ref="status" class="gl-ml-6" data-testid="status-icon" @click="$emit('toggle-sidebar')">