Delete old travis setting

[alice6373]

Types of changes

Thanks for sending a pull request! Please fill in the following content to let us know better about this change. Please put an x in the box that applies

• [ ] Bugfix
• [ ] New feature
• [ ] Refactoring
• [ ] Breaking change (any change that would cause existing functionality to not work as expected)
• [ ] Documentation Update
• [X] Other (Clear non required documents)

Description

Delete non required part of .travis.yml.

Steps to Test This Pull Request

Steps to test new .travis.yml

1. Go to https://travis-ci.com/
2. Login personal Github account
3. Click on 'Dashboard'
4. Click on 'personal Github account/pycon.tw' rebuild button
5. See result is passed or errored

Expected behavior

The result after Travis CI running is passed.

Related Issue

[Official announcement of travis Travis CI] Please be aware travis-ci.org will be shutting down in several weeks, with all accounts migrating to travis-ci.com. Please stay tuned here for more information.

More Information

Test result

[codecov-commenter]

Codecov Report

Merging #1000 (36b7d04) into master (e818332) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1000   +/-   ##
=======================================
  Coverage   70.10%   70.10%           
=======================================
  Files          80       80           
  Lines        3121     3121           
=======================================
  Hits         2188     2188           
  Misses        933      933           

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