Make time track help state top margin consistent

- Removes duplicated css

Changelog: fixed

app/assets/javascripts/boards/components/board_content_sidebar.vue

@@ -200,7 +200,7 @@ export default {
             />
           </template>
         </div>
-        <board-sidebar-time-tracker class="swimlanes-sidebar-time-tracker" />
+        <board-sidebar-time-tracker />
         <sidebar-date-widget
           :iid="activeBoardItem.iid"
           :full-path="fullPath"

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

@@ -94,15 +94,3 @@ $epic-icons-spacing: 40px;
     max-width: calc(100vw - #{$contextual-sidebar-width} - #{$gutter-width} - #{$epic-icons-spacing});
   }
 }
-
-.swimlanes-sidebar-time-tracker {
-  .time-tracking-help-state {
-    margin: 16px -24px 0;
-    @include gl-px-6;
-    @include gl-py-2;
-    @include gl-border-gray-100;
-    @include gl-border-t-solid;
-    @include gl-border-t-1;
-    @include gl-border-b-0;
-  }
-}

ee/spec/frontend/boards/components/__snapshots__/board_content_sidebar_spec.js.snap

@@ -57,9 +57,7 @@ exports[`ee/BoardContentSidebar matches the snapshot 1`] = `
     />
   </div>
    
-  <boardsidebartimetracker-stub
-    class="swimlanes-sidebar-time-tracker"
-  />
+  <boardsidebartimetracker-stub />
    
   <sidebardatewidget-stub
     data-testid="sidebar-due-date"