hg: openjfx/8u-dev/rt: RT-39341: TreeTableView doesn't maintain position properly when cells count changes [revert fix for RT-39104]

[kevin.rushforth at oracle.com]

Changeset: 051a0211defc
Author:    kcr
Date:      2014-11-10 11:08 -0800
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/051a0211defc

RT-39341: TreeTableView doesn't maintain position properly when cells count changes [revert fix for RT-39104]
Backed out changeset 9543220a5ff3

! modules/controls/src/main/java/com/sun/javafx/scene/control/skin/VirtualFlow.java
! modules/controls/src/test/java/javafx/scene/control/ListViewTest.java
! modules/controls/src/test/java/javafx/scene/control/TreeTableViewTest.java