Revert "Add undocumented sortByAccessedTime, sortByChangedTime and sortByModifiedTime methods in finder component"

This reverts commit 7769563.

Author: royklutman

components/finder.rst

@@ -170,14 +170,6 @@ Sort the result by name or by type (directories first, then files)::
 
     $finder->sortByType();
 
-Sort the files and directories by the last accessed, changed or modified time::
-
-    $finder->sortByAccessedTime();
-
-    $finder->sortByChangedTime();
-
-    $finder->sortByModifiedTime();
-
 .. note::
 
     Notice that the ``sort*`` methods need to get all matching elements to do