[BUGFIX] RTE wizard can't "save document and view page"

Including the full fieldConfig from TCA may produce too long an URL.
In IE, the RTE wizard simply does not open.

Solution: Remove the fieldConfig parameter not used by the RTE wizard.

Revolves: #43637
Resolves: #43631
Releases: 4.5, 4.7, 6.0, 6.1, 6.2
Change-Id: Idd855d56d6a7ed92d40d9a788bc11efb3f535ed3
Reviewed-on: https://review.typo3.org/22648
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters