Fix #34315: memory leak cancelling move to layer operator, after change to make
it not execute immediately when opening the popup.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@54661 954f8c5b-7b00-dc11-b283-0030488c597c
Remove define which is not actually needed and could have been
conflicted with one from IMB_colormanagement.h

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@54662 954f8c5b-7b00-dc11-b283-0030488c597c