[TASK] Remove record_list icon from Page module

Removes the record_list icon from the docHeader in Page module.

This icon links from page to list module but does not bring the
backend to a consistent state. The module bar is e.g. not updated.

The decision to remove the icon was taken at UX sprint 2012.

Change-Id: I754a5840a244017986bcaca2ecd4bf16a63cb85e
Releases: 6.0
Resolves: #38828
Reviewed-on: http://review.typo3.org/12911
Reviewed-by: Marcus Schwemer
Tested-by: Marcus Schwemer
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn