The "Optimization" tab in the Cleanup settings should be named
"Performance" tab. It is ambiguous. You can also optimize the size of
your source code.

Change-Id: I81e1570b3c67798aac03848c9036d50d7ad7d005
Signed-off-by: Fabrice Tiercelin <fabrice.tiercelin@yahoo.fr>
Reviewed-on: https://git.eclipse.org/r/c/jdt/eclipse.jdt.ui/+/183538
Tested-by: JDT Bot <jdt-bot@eclipse.org>
Reviewed-by: Lars Vogel <Lars.Vogel@vogella.com>