+* Removed File::sha1Base36(). (deprecated since 1.19)
+* Removed File::getPropsFromPath(). (deprecated since 1.19)
+* Removed functions blockedPage(), noCreatePermission(), readOnlyPage() and
+ userNotLoggedInPage() from EditPage.php. (deprecated since 1.19)
+* Removed functions getContent(), getPreloadedText(), mergeChangesInto() and
+ setPreloadedText() from EditPage.php. (deprecated since 1.21)
+* Removed global functions wfArrayLookup(), wfArrayMerge(), wfDebugDieBacktrace()
+ and wfTime(). (deprecated since 1.22)
+* Microsoft Internet Explorer 6 is now a "grade C" browser, meaning that
+ JavaScript is no longer executed in this browser. The IEFixes script, which
+ existed purely to provide support for MSIE versions below 7 and which was
+ conditionally loaded for those browsers, was also removed.