Revert "Proper change of color space and profile for image through "Image properties" dialog"
This reverts commit 4763f5e524c0cc08f38dae4b1a89d28a2649a985.
This commit breaks usual conversion of color spaces.
See bug: https://bugs.kde.org/show_bug.cgi?id=377267
BUG:377267
Ref D4328