[TYPO3-v4] removing depreciated function

[Søren Malling]

> This should solve problem for most cases. At least user who upgrade will be
> warned directly and in simple way. I know there is depreciation.log but the
> solution must be easier than that.
>

How much easier can it get? Enable deprecation log, and make it your
task to make a patch for the extensions that gets entries in the file.
(no joking, dead serious!)

After all, we are all responsible for our community :-)

Thanks for cleaning up the core!

Regards,

Søren