Revert "LivoxGen1: Use syncCancelerForAsyncWork in producer pipeline"

This reverts commit d788810a05.

We're doing this because it's not necessary. We will be porting to
coros soon and we can just use brace-scopes.

stimBuffApis/livoxGen1/openClCollatingAndMeshingEngine.h

@@ -15,7 +15,7 @@
 #include <CL/cl.h>
 #include <spinscale/asynchronousLoop.h>
 #include <spinscale/cps/callback.h>
-#include <spinscale/syncCancelerForAsyncWork.h>
+#include <spinscale/spinLock.h>
 #include <user/stimulusFrame.h>
 #include <user/stagingBuffer.h>
 #include <user/frameAssemblyDesc.h>
@@ -150,7 +150,8 @@ private:
 	cl_mem clAverageIntensityBuffer;
 
 	// State tracking
-	sscl::SyncCancelerForAsyncWork openClCollMeshEngnCanceler;
+	sscl::SpinLock shouldAcceptRequestsLock;
+	bool shouldAcceptRequests;
 	bool compactIsRunning;
 	bool collateIsRunning;
 	cl_event currentCompactKernelEvent;