[TASK] EXT:form - remove email validator for Textarea form elements

Remove the email validator from the validators select list for
Textarea form elements within the form editor.

Resolves: #79533
Releases: master
Change-Id: I9f35a2291910bc0d38b388ad5f2d5b0a0f66c242
Reviewed-on: https://review.typo3.org/51459


Tested-by: TYPO3com <no-reply@typo3.com>
Tested-by: Mona Muzaffar <mona.muzaffar@gmx.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Bjoern Jacob <bjoern.jacob@tritum.de>
Tested-by: Bjoern Jacob <bjoern.jacob@tritum.de>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>