[TASK] Remove ses_name from tables fe_sessions and be_sessions

Both fe_session and be_session table currently have a combined
primary key on ses_id / ses_name which is not needed by the new
session framework.

In addition the field ses_name is dropped.

Resolves: #79720
Releases: master
Change-Id: I4827d4ebfa0e04a303fca21ae865c99188d1a81a
Reviewed-on: https://review.typo3.org/51821


Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>