COMPMID-3957: Deprecate CV functions in CL backend.

COMPMID-3957: Deprecate CV functions in CL backend.

Change-Id: Ic3deac8d6ce128312f49aa1ddf9f508d05d1b7a2
Signed-off-by: morgolock <pablo.tello@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4368
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Sheri Zhang <sheri.zhang@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>