Revert change to complex division, forgot that files have to be unwrapped first to deal with situation where phase progresses more than one cycle between first and last echo.
Revert change to complex division, forgot that files have to be
unwrapped first to deal with situation where phase progresses
more than one cycle between first and last echo.

This reverts commit 40ecffd3ba9f3998734f20d4cd7e2f3126558c9c.

spinicist/old_QUIT,spinicist/old_QUIT,spinicist/old_QUIT,spinicist/old_QUIT