Remove unnecessary parenthetical that should have been "e.g." instead of "i.e." anyway.

see #23119

git-svn-id: https://core.svn.wordpress.org/trunk@24356 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Compress scripts/styles: 3.6-beta3-24357.

git-svn-id: https://core.svn.wordpress.org/trunk@24357 1a063a9b-81f0-0310-95a4-ce76da25c4cd