chore(*): disabling perf tests because of flicker

Author: ChronosSF

.travis.yml

@@ -23,7 +23,7 @@ script:
 - npm run lint:lib
 - ng build igniteui-angular --prod
 - npm run build:style
-- if [ -z "${TRAVIS_TAG}" ]; then npm run test:lib:perf; fi
+# - if [ -z "${TRAVIS_TAG}" ]; then npm run test:lib:perf; fi
 - if [ -z "${TRAVIS_TAG}" ]; then npm run test:lib:others; fi
 - if [ -z "${TRAVIS_TAG}" ]; then npm run test:lib:grid; fi
 - if [ -z "${TRAVIS_TAG}" ]; then npm run test:lib:tgrid; fi