This PR removes an old fix (RT-13965/JDK-8113318), which was applied in 2011 to avoid a memory leak in `VirtualFlow::sheetChildren`, after new items were constantly added.
With the current VirtualFlow implementation, there are in place the necessary methods that take care of cleaning or adding new cells to the sheetChildren list, and such memory leak doesn't exist, the size remains constant when new items are added or removed (see included unity test). The call to `sheetchildren.clear()`, on the contrary, has a big impact in performance and CPU usage, when new items are constantly added, as has been reported in JDK-8185886/#108. ------------- Commit messages: - Add test to verify the sheet children size remains constant when adding or removing new items - Remove old fix RT-13965 Changes: https://git.openjdk.java.net/jfx/pull/298/files Webrev: https://webrevs.openjdk.java.net/?repo=jfx&pr=298&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8252811 Stats: 38 lines in 2 files changed: 32 ins; 6 del; 0 mod Patch: https://git.openjdk.java.net/jfx/pull/298.diff Fetch: git fetch https://git.openjdk.java.net/jfx pull/298/head:pull/298 PR: https://git.openjdk.java.net/jfx/pull/298
