datatable: remove js coverage from npm test
datatable: remove js coverage from npm test

javascript coverage report does not make any sense, in addition it
scrolls up the test results that are more important on the screen

Alfresco/alfresco-ng2-components,Alfresco/alfresco-ng2-components,Alfresco/alfresco-ng2-components,Alfresco/alfresco-ng2-components