StimProd,DevReattacher: use CDaemon nonviral nursery coro

We ported these two daemons over to the new nursery mechanism and
they work nicely.

include/user/stimulusProducer.h

@@ -12,7 +12,6 @@
 #include <boost/asio/deadline_timer.hpp>
 #include <spinscale/co/invokers.h>
 #include <spinscale/co/nonViralTaskNursery.h>
-#include <spinscale/spinLock.h>
 #include <spinscale/syncCancelerForAsyncWork.h>
 #include "deviceAttachmentSpec.h"
 
@@ -39,7 +38,7 @@ public:
 		const std::shared_ptr<device::DeviceAttachmentSpec>
 			&deviceAttachmentSpec,
 		boost::asio::io_context& ioContext_)
-	: daemonTimer(ioContext_), nDeferrals(0),
+	: daemonTimer(ioContext_),
 	deviceAttachmentSpec(deviceAttachmentSpec), ioContext(ioContext_)
 	{}
 
@@ -54,9 +53,6 @@ public:
 	virtual void start();
 	virtual void stop();
 
-	void allowNextStimulusFrame()
-		{ frameAssemblyRateLimiter.release(); }
-
 	virtual std::shared_ptr<StimulusBuffer> getAttachedStimulusBuffer(
 		const std::shared_ptr<device::DeviceAttachmentSpec>& spec) const;
 
@@ -77,8 +73,6 @@ public:
 	bool hasBufferWithQualeIfaceApi(const std::string& qualeIfaceApi) const;
 
 protected:
-	sscl::SpinLock frameAssemblyRateLimiter;
-
 	// Virtual functions for derived classes to override
 	virtual int getStopDelayMs() const
 	{
@@ -96,8 +90,7 @@ protected:
 
 	sscl::co::NonViralTaskNursery taskNursery;
 	boost::asio::deadline_timer daemonTimer;
-	size_t nDeferrals;
-	std::chrono::high_resolution_clock::time_point deferralStartTime;
+	size_t nTimesliceOverruns = 0;
 
 public:
 	std::shared_ptr<device::DeviceAttachmentSpec> deviceAttachmentSpec;