Is your feature request related to a problem? Please describe.
Since Travis disabled from #11442 and run parallelly with ADO for a while.
Should remove those uncessary files.

Describe the solution you'd like
Delete those files memtion in .travis.yaml but not in ADO.

• scripts/ci/build_droid.sh
• scripts/ci/publish.py
• scripts/ci/publish.sh
• .travis.yml

Describe alternatives you've considered
None

Additional context
None