Fixing product-iots#1314

Fixed https://github.com/wso2/product-iots/issues/1314

components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/pages/cdmf.page.groups/css/groups.css

@@ -0,0 +1,3 @@
+.dataTablesTop .dataTables_toolbar ul li:nth-child(1),  .dataTables_toolbar ul li:nth-child(2){
+    display: none;
+}

components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/pages/cdmf.page.groups/groups.hbs

@@ -22,6 +22,10 @@
 {{unit "cdmf.unit.data-tables-extended"}}
 {{unit "cdmf.unit.lib.ui-permissions-utility"}}
 
+{{#zone "topCss"}}
+    {{css "css/groups.css"}}
+{{/zone}}
+
 {{#zone "breadcrumbs"}}
     <li>
         <a href="{{@app.context}}/">