[TASK] Remove usage of modTmpl->setForm from ImportExportController

Resolves: #71214
Releases: master
Change-Id: Ic763cecf6227fee5e88bf77801be9a1848d49961
Reviewed-on: https://review.typo3.org/44454


Reviewed-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Tested-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Reviewed-by: Michael Oehlhof <typo3@oehlhof.de>
Tested-by: Michael Oehlhof <typo3@oehlhof.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>