revert changes

src/Explorer/Menus/CommandBar/MemoryTrackerComponent.less

@@ -6,18 +6,17 @@
     margin: 0 9px;
     border: 1px;
 
-    >span {
+    > span {
         padding-right: 12px;
         font-size: 13px;
         font-family: @DataExplorerFont;
         color: @DefaultFontColor;
     }
 
-    >.lowMemory {
+    > .lowMemory {
         .ms-ProgressIndicator-progressBar {
             background-color: @SelectionHigh;
         }
-
         .ms-ProgressIndicator-itemDescription {
             color: @SelectionHigh;
         }