[Sanity]Remove two npm sanity test cases
[Sanity]Remove two npm sanity test cases

Npm not supposed to be in the images. So remove the npm sanity test cases.
See comments of IOTOS-814

Signed-off-by: Zhong Qiu <ca73824edc92643a93ca64fa79d0fe892f396ddf@intel.com>

daweiwu/meta-iotqa-1,wanghongjuan/meta-iotqa-1,wanghongjuan/meta-iotqa-1,ostroproject/meta-iotqa,ostroproject/meta-iotqa,daweiwu/meta-iotqa-1,wanghongjuan/meta-iotqa-1,daweiwu/meta-iotqa-1,wanghongjuan/meta-iotqa-1,ostroproject/meta-iotqa,ostroproject/meta-iotqa,daweiwu/meta-iotqa-1,wanghongjuan/meta-iotqa-1,daweiwu/meta-iotqa-1,ostroproject/meta-iotqa