Remove "error code" on permission error pages

[Apfelstrudel]

Hello,

from the UX perspective I would really appreciate if we could remove the cryptic error code line (in grey) for guests and users on permission error pages.

Is there any way to do that? Users and guests don't benefit from this information.

[Nathan Explosion]

#elError div p:nth-of-type(2){
  display:none;
}