Remove unnecessary CSS in VSA

In an effort to clean up the CSS in
VSA, we can remove the FOSS stylesheet
and a random class name.

Changelog: fixed

app/assets/javascripts/cycle_analytics/components/base.vue

@@ -153,7 +153,7 @@ export default {
 };
 </script>
 <template>
-  <div class="cycle-analytics">
+  <div>
     <h3>{{ $options.i18n.pageTitle }}</h3>
     <div class="gl-display-flex gl-flex-direction-column gl-md-flex-direction-row">
       <path-navigation

app/assets/javascripts/cycle_analytics/components/stage_table.vue

@@ -213,7 +213,7 @@ export default {
             <p class="gl-m-0">
               <gl-link
                 data-testid="vsa-stage-event-link"
-                class="gl-text-black-normal pipeline-id"
+                class="gl-text-black-normal"
                 :href="item.url"
                 >{{ itemId(item.id, '#') }}</gl-link
               >

app/assets/stylesheets/page_bundles/cycle_analytics.scss

-@import 'mixins_and_variables_and_functions';
-
-.cycle-analytics {
-  margin: 24px auto 0;
-  position: relative;
-}

ee/app/assets/javascripts/analytics/cycle_analytics/components/base.vue

@@ -182,7 +182,7 @@ export default {
         @setDateRange="onSetDateRange"
       />
     </div>
-    <div v-if="!shouldRenderEmptyState" class="cycle-analytics gl-mt-2">
+    <div v-if="!shouldRenderEmptyState" class="gl-mt-2">
       <gl-empty-state
         v-if="hasNoAccessError"
         class="js-empty-state"

ee/app/assets/stylesheets/page_bundles/cycle_analytics.scss

-@import '../../../../../app/assets/stylesheets/page_bundles/cycle_analytics';
+@import 'page_bundles/mixins_and_variables_and_functions';
 
 .gl-daterange-picker {
   .gl-datepicker-input {