[BUGFIX] Open admin panel backend link in new tab, not a popup

Simply remove the JavaScript parameters to open the window
in a tab, not a popup.

Resolves: #50364
Releases: master
Change-Id: Ib473e1b94ebcfa79a69f271cfbe62cbe85fdf7c1
Reviewed-on: http://review.typo3.org/43535


Reviewed-by: Jan Helke <typo3@helke.de>
Tested-by: Jan Helke <typo3@helke.de>
Reviewed-by: Markus Sommer <markussom@posteo.de>
Tested-by: Markus Sommer <markussom@posteo.de>
Reviewed-by: Frank Nägler <frank.naegler@typo3.org>
Tested-by: Frank Nägler <frank.naegler@typo3.org>