Drop node-engine's optional verb pull-waits: no record gives the seat that verb

The lead's ruling (14:2x): the pull waits ENG-9 shows are carried in the engine's have, read through node_haves, as
ENG-9 allows, so the seat serves no verb of its own for them. Regenerated; seatgen -check finds nothing out of step.

Claude-Session: https://claude.ai/code/session_01JG73KJNrH5EgFXMKKYSrig

go/seats/nodeengine/contract.go

@@ -17,7 +17,6 @@ const (
 	VerbComposition      = "composition"
 	VerbCompose          = "compose"
 	VerbComposeCandidate = "compose-candidate"
-	VerbPullWaits        = "pull-waits"
 	VerbManifestReads    = "manifest-reads"
 )
 
@@ -30,7 +29,7 @@ const (
 
 // Verbs is every verb the seat serves, in its definition's order: a new copy each call.
 func Verbs() []string {
-	return []string{VerbHandOver, VerbAccessAct, VerbJudgeDirectories, VerbSetuidSearch, VerbRootFree, VerbActs, VerbPackages, VerbComposition, VerbCompose, VerbComposeCandidate, VerbPullWaits, VerbManifestReads}
+	return []string{VerbHandOver, VerbAccessAct, VerbJudgeDirectories, VerbSetuidSearch, VerbRootFree, VerbActs, VerbPackages, VerbComposition, VerbCompose, VerbComposeCandidate, VerbManifestReads}
 }
 
 // Events is every event published on the seat's subject: a new copy each call.
@@ -493,38 +492,6 @@ type ComposeCandidateAnswer struct {
 	Verdict string `json:"verdict"`
 }
 
-// PullWaitsInput is what pull-waits takes.
-type PullWaitsInput struct {
-}
-
-// PullWaitsAnswerWaitsItem is a type of the contract.
-type PullWaitsAnswerWaitsItem struct {
-	// that seat's holder, whose settled the retry waits on
-	Holder string `json:"holder,omitempty"`
-	// the image whose pull failed
-	Image string `json:"image"`
-	// the module whose apply failed
-	Module string `json:"module"`
-	// when the failed pull began, RFC 3339
-	PullBegan string `json:"pull-began,omitempty"`
-	// when it was last tried again, RFC 3339
-	RetryLast string `json:"retry-last,omitempty"`
-	// what started that retry: settled, or the engine's start
-	RetryTrigger string `json:"retry-trigger,omitempty"`
-	// the seat the image came through
-	Seat string `json:"seat,omitempty"`
-	// the settled events of the holder heard since the engine started
-	SettledCount int64 `json:"settled-count,omitempty"`
-	// when the last was heard, RFC 3339
-	SettledLast string `json:"settled-last,omitempty"`
-}
-
-// PullWaitsAnswer is what pull-waits answers.
-type PullWaitsAnswer struct {
-	// every failed pull waiting on a holder
-	Waits []PullWaitsAnswerWaitsItem `json:"waits"`
-}
-
 // ManifestReadsInput is what manifest-reads takes.
 type ManifestReadsInput struct {
 }