[FEA]: Remove cuda::mr::managed_memory property until we've decided on more appropriate properties

[jrhemstad]

Is this a duplicate?

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Area

libcu++

Is your feature request related to a problem? Please describe.

cuda::mr defines a property system for defining properties of memory like device_accessible and host_accessible.

#1579 added cuda::mr::managed_memory as a new property, but this isn't quite right. Managed memory is a kind of memory, not a property of memory.

Describe the solution you'd like

Remove cuda::mr::managed_memory as a property for now. Then define and add more appropriate properties that describe the capabilities of managed memory.

Describe alternatives you've considered

No response

Additional context

No response