[FOLLOWUP][BUGFIX] Remove uglify of jquery-ui/sortable.js

This patch removes the uglify task of jquery-ui/sortable.js.
With https://review.typo3.org/#/c/55389/ the lib was patched
and already uglified. This patch prevents a double uglify of the file.

Resolves: #83593
Releases: master, 8.7
Change-Id: I16edd94fc8d3165159b4dc0a47ac7365ff34e37f
Reviewed-on: https://review.typo3.org/55517


Reviewed-by: Mathias Schreiber <mathias.schreiber@typo3.com>
Tested-by: Mathias Schreiber <mathias.schreiber@typo3.com>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>