Remove separator and cleanup margins

changelogs/unreleased/mw-pa-title-cleanup.yml

+---
+title: 'Productivity Analytics: Remove separator and cleanup title margins'
+merge_request: 30839
+author:
+type: changed

ee/app/views/groups/analytics/productivity_analytics/show.html.haml

@@ -3,8 +3,8 @@
 - data_attributes = @request_params.valid? ? @request_params.to_data_attributes : @request_params.to_default_data_attributes
 
 #js-productivity-analytics{ data: data_attributes.merge(hide_group_drop_down: 'true') }
-  .page-title-holder.d-flex.align-items-center
-    .page-title
+  .mb-3
+    %h3
       = _('Productivity Analytics')
   .row-content-block.second-block.d-flex.flex-column.flex-lg-row.mt-3.py-2.px-3
     .js-group-project-select-container