Revert "whitespaces only."

This reverts commit 6ad1b29f9f16b00fd9dc4637679889af650be6ce.
Revert "Image::flipVertically(), Image::flipHorizontally() optimizations."

This reverts commit e32c72bbd0e9d46974fbd349547c62bbdeee3f19.
Revert "whitespaces only."

This reverts commit 8714a6b53c5b098afe63b2032521a42125ee678e.