Fix typo in phpdoc. props jamescollins. fixes #25092.

git-svn-id: http://develop.svn.wordpress.org/trunk@25097 602fd350-edb4-49c9-b593-d223f7449a82
Remove unused variable. props jeremyfelt. fixes #25121.

git-svn-id: http://develop.svn.wordpress.org/trunk@25098 602fd350-edb4-49c9-b593-d223f7449a82
Remove redundant context for Child Themes link. fixes #25079.

git-svn-id: http://develop.svn.wordpress.org/trunk@25099 602fd350-edb4-49c9-b593-d223f7449a82
Correct phpdoc for wp-admin/menu.php. props neoxx. fixes #25124.

git-svn-id: http://develop.svn.wordpress.org/trunk@25100 602fd350-edb4-49c9-b593-d223f7449a82
Add description for _wp_timezone_choice_usort_callback(). props neoxx. fixes #25125.

git-svn-id: http://develop.svn.wordpress.org/trunk@25101 602fd350-edb4-49c9-b593-d223f7449a82