Remove failing test for unimplemented `wp_mail()` enhancement.

The removed test has been added as a patch to the original ticket, #15448.

Props MikeHansenMe.
See #30284.
Built from https://develop.svn.wordpress.org/trunk@30516


git-svn-id: http://core.svn.wordpress.org/trunk@30505 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove skipped tests for unimplemented JS plural functions.

The tests have been added as a patch for the original ticket, #22229.

Props MikeHansenMe.
See #22229.
Built from https://develop.svn.wordpress.org/trunk@30517


git-svn-id: http://core.svn.wordpress.org/trunk@30506 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove skipped tests for `WP_Export_Query`.

These tests have been added as a patch to the ticket where the new
functionality was originally proposed, #22435.

See #30284.
Built from https://develop.svn.wordpress.org/trunk@30518


git-svn-id: http://core.svn.wordpress.org/trunk@30507 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove failing test in the `hooks` group.

The removed test has been added as a patch to #21169.

Props MikeHansenMe.
See #30284.
Built from https://develop.svn.wordpress.org/trunk@30519


git-svn-id: http://core.svn.wordpress.org/trunk@30508 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove failing assertions from `is_serialized()` tests.

They have been moved to new test methods, which have been attached as a patch
to the ticket #9930.

See #30284.
Built from https://develop.svn.wordpress.org/trunk@30520


git-svn-id: http://core.svn.wordpress.org/trunk@30509 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove failing `is_textdomain_loaded()` test.

The removed test has been added as a patch to the original ticket, #21319.

Props MikeHansenMe.
See #30284.
Built from https://develop.svn.wordpress.org/trunk@30521


git-svn-id: http://core.svn.wordpress.org/trunk@30510 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove failing test related to `wp_unique_post_slug()`.

The test has been added as a patch to #18962.

See #30284.
Built from https://develop.svn.wordpress.org/trunk@30522


git-svn-id: http://core.svn.wordpress.org/trunk@30511 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove failing test related to `wp_list_pages()`.

The test has been added as a patch to #27326.

Props MikeHansenMe.
See #30284.
Built from https://develop.svn.wordpress.org/trunk@30523


git-svn-id: http://core.svn.wordpress.org/trunk@30512 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove failing test related to the 'offset' param of `WP_Query`.

This test has been added as a patch to #18897.

Props MikeHansenMe.
See #30284.
Built from https://develop.svn.wordpress.org/trunk@30524


git-svn-id: http://core.svn.wordpress.org/trunk@30513 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Repair the `seems_utf8()` tests that use Big5 encoding.

* Provide sample data that is actually encoded in Big5.
* Do some actual assertions against that data.

Props akumria.
Fixes #30455.
Built from https://develop.svn.wordpress.org/trunk@30525


git-svn-id: http://core.svn.wordpress.org/trunk@30514 1a063a9b-81f0-0310-95a4-ce76da25c4cd