[TASK] Remove useless comment in layout of viewpage

Since rendering of the view icon has changed,
the comment above it is now useless.

Resolves: #53581
Releases: 6.2
Change-Id: I6fcf8150361fda8607eea602aae47d0a39db2005
Reviewed-on: https://review.typo3.org/25362
Reviewed-by: Stefan Neufeind
Tested-by: Stefan Neufeind