Unused variable

[QiAnXinCodeSafe]

https://github.com/eclipse/gef/blob/028a952194429b3ba94a0dbfed8a7dddb4a6a0cb/org.eclipse.gef.zest.fx/src/org/eclipse/gef/zest/fx/behaviors/AbstractLayoutBehavior.java#L59

This variable is never used.

[miklossy]

@QiAnXinCodeSafe : Thanks for reporting the issue!

Would be nice if you could come up with a Pull Request fixing the problem.