[BUGFIX] Invalid module token in openid wizard

Fix the double htmlspecialchars call by removing the one
in the controller. Fluid does it anyway.

Resolves: #58719
Releases: 6.2
Change-Id: I1a62c41b94150494e429cec913eb43e1ec3f7ca8
Reviewed-on: https://review.typo3.org/30026
Reviewed-by: Mathias Brodala
Tested-by: Mathias Brodala
Reviewed-by: Oliver Hader
Tested-by: Oliver Hader
Reviewed-by: Wouter Wolters
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel