AMBARI-25533. Delete redundant phantomjs dependency (dpidhaiets via dgrinenko) (#3209)

ambari-web/package.json

@@ -36,7 +36,6 @@
     "karma-mocha": "0.1.1",
     "karma-sinon": "~1.0.2",
     "mocha": "2.5.3",
-    "phantomjs": "~2.1.0",
     "sinon": "=1.7.3",
     "sinon-chai": "~2.8.0"
   },