[1.1.x] Treat TMC2660 like non-TMC

[thinkyhead]

TMC2660 may not be supportable at this time, so for now simply remove them from the HAS_TRINAMIC condition and treat them like other non-Trinamic stepper drivers.

Counterpart to #11508

[teemuatlut]

I think it would also be a good idea to modify the stealthchop and stallguard macros.

Marlin/Marlin/Conditionals_post.h

Lines 733 to 736 in f6ef58f

	#define HAS_STEALTHCHOP (HAS_DRIVER(TMC2130) || HAS_DRIVER(TMC2208))
	#define HAS_STALLGUARD (HAS_DRIVER(TMC2130) || HAS_DRIVER(TMC2660))
	#define AXIS_HAS_STEALTHCHOP(ST) ( AXIS_DRIVER_TYPE(ST, TMC2130) || AXIS_DRIVER_TYPE(ST, TMC2208) )
	#define AXIS_HAS_STALLGUARD(ST) ( AXIS_DRIVER_TYPE(ST, TMC2130) || AXIS_DRIVER_TYPE(ST, TMC2660) )

Just don't remove them as they will be expanded again.

[thinkyhead]

I think it would also be a good idea to modify the stealthchop and stallguard macros.

How should they be modified?

[teemuatlut]

We can remove the references to TMC2660 for now. They'll be added back once the time is right.

[thinkyhead]

Ah, ok. I see that HAS_STALLGUARD mentions 2660, but HAS_STEALTHCHOP doesn't.