Remove Processor class

[Christian-B]

The processors are indexed by ID in chip

With #237 the scamp(monitor) cores are kept separate from the "user" or none scamp ones.

So Processor.is_monitor is no longer used.

Processor methods dtcm_available, cpu_cycles_availabe and clock_speed return constant values.

Better to move these values to Version when and if anything cares!

[Christian-B]

The only thing Processor class could be used to is the mapping between virtual id, physical id and possibly for spin 2 coreY and coreX

Currently the Chip class already holds the virtual to physical mapping.
See #243

[Christian-B]

Chip would just keep a list of scamp/monitor and user/none_scamp (Virtual) ids.

[Christian-B]

If and when we need to include information on Processor Quads I still don't think the Processor class will help.

[Christian-B]

farther examination shows the only place Processor class is used is in a unit test to use it as part of a vertex label

[Christian-B]

Fixed by #246