[wp-trac] [WordPress Trac] #52666: Remove some lingering Travis CI references

[WordPress Trac]

#52666: Remove some lingering Travis CI references
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 Reporter:  johnbillion       |       Owner:  ocean90
     Type:  task (blessed)    |      Status:  closed
 Priority:  low               |   Milestone:  5.8
Component:  Build/Test Tools  |     Version:  5.7
 Severity:  normal            |  Resolution:  fixed
 Keywords:  has-patch         |     Focuses:
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Changes (by ocean90):

 * owner:  (none) => ocean90
 * status:  new => closed
 * resolution:   => fixed


Comment:

 In [changeset:"50697" 50697]:
 {{{
 #!CommitTicketReference repository="" revision="50697"
 Build/Test Tools: Remove remaining Travis CI references.

 * Remove `travis:` tasks in Gruntfile.js.
 * Remove status badge in README.md that comes from Travis CI via
 shields.io.
 * Remove Travis CI related skipping in the
 `WP_UnitTestCase_Base::skipOnAutomatedBranches()` test method and related
 Docker environment variables.

 Props johnbillion, SergeyBiryukov, ocean90.
 See #52161.
 Fixes #52666.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/52666#comment:2>
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