Remove `access.ssdl` when `REP` has converted to `Standard Results`

[tnatt]

With the introduction of Standard Results the information in access.ssdl will no longer be needed. This information has mainly been used by REP to detect data that should be displayed in their frontend.

When REP has fully converted to Standard Results we should replace the SsdlAccess with Access below:

fmu-datamodels/src/fmu/datamodels/fmu_results/fmu_results.py

Lines 334 to 336 in a9a49e3

	access: SsdlAccess
	"""The ``access`` block contains information related to access control for
	this data object. See :class:`SsdlAccess`."""

And remove the SsdlAccess and the Ssdl models

fmu-datamodels/src/fmu/datamodels/fmu_results/fields.py

Lines 68 to 75 in a9a49e3

	class SsdlAccess(Access):
	"""
	The ``access`` block contains information related to access control for
	this data object, with legacy SSDL settings.
	"""
	ssdl: Ssdl
	"""A block containing information related to SSDL. See :class:`Ssdl`."""

fmu-datamodels/src/fmu/datamodels/fmu_results/fields.py

Lines 41 to 51 in a9a49e3

	class Ssdl(BaseModel):
	"""
	The ``access.ssdl`` block contains information related to SSDL.
	Note that this is kept due to legacy.
	"""
	access_level: enums.Classification
	"""The SSDL access level. See :class:`enums.Classification`."""
	rep_include: bool
	"""Flag if this data is to be shown in REP or not."""