[!!!][TASK] Remove websvg functionality

The third-party library "websvg" and its usage
is completely removed in the TYPO3 Core.

All usages to this functionality will
not work anymore.

All frontend usages via TypoScript will
show no fallback logic for IE anymore.

Resolves: #65962
Releases: master
Change-Id: I758a2bcefeeac39f8e5660c0347d2473a2a2639e
Reviewed-on: http://review.typo3.org/38089


Reviewed-by: Frank Nägler <typo3@naegler.net>
Tested-by: Frank Nägler <typo3@naegler.net>
Reviewed-by: Benjamin Mack <benni@typo3.org>
Tested-by: Benjamin Mack <benni@typo3.org>
Reviewed-by: Andreas Fernandez <andreas.fernandez@aspedia.de>
Tested-by: Andreas Fernandez <andreas.fernandez@aspedia.de>