chore: remove US history pruner feature toggle (#114014)

pkg/storage/unified/sql/backend.go

@@ -62,10 +62,6 @@ type BackendOptions struct {
 	IsHA            bool
 	storageMetrics  *resource.StorageMetrics
 
-	// If true, the backend will prune history on write events.
-	// Will be removed once fully rolled out.
-	withPruner bool
-
 	// testing
 	SimulatedNetworkLatency time.Duration // slows down the create transactions by a fixed amount
 
@@ -101,7 +97,6 @@ func NewBackend(opts BackendOptions) (Backend, error) {
 		storageMetrics:          opts.storageMetrics,
 		bulkLock:                &bulkLock{running: make(map[string]bool)},
 		simulatedNetworkLatency: opts.SimulatedNetworkLatency,
-		withPruner:              opts.withPruner,
 		lastImportTimeMaxAge:    opts.LastImportTimeMaxAge,
 	}, nil
 }
@@ -141,7 +136,6 @@ type backend struct {
 	simulatedNetworkLatency time.Duration
 
 	historyPruner resource.Pruner
-	withPruner    bool
 
 	lastImportTimeMaxAge       time.Duration
 	lastImportTimeDeletionTime atomic.Time
@@ -198,11 +192,6 @@ func (b *backend) initLocked(ctx context.Context) error {
 }
 
 func (b *backend) initPruner(ctx context.Context) error {
-	if !b.withPruner {
-		b.log.Debug("using noop history pruner")
-		b.historyPruner = &resource.NoopPruner{}
-		return nil
-	}
 	b.log.Debug("using debounced history pruner")
 	// Initialize history pruner.
 	pruner, err := debouncer.NewGroup(debouncer.DebouncerOpts[resource.PruningKey]{

pkg/storage/unified/sql/server.go

@@ -98,15 +98,12 @@ func NewResourceServer(opts ServerOptions) (resource.ResourceServer, error) {
 
 		isHA := isHighAvailabilityEnabled(opts.Cfg.SectionWithEnvOverrides("database"),
 			opts.Cfg.SectionWithEnvOverrides("resource_api"))
-		//nolint:staticcheck // not yet migrated to OpenFeature
-		withPruner := opts.Features.IsEnabledGlobally(featuremgmt.FlagUnifiedStorageHistoryPruner)
 
 		backend, err := NewBackend(BackendOptions{
 			DBProvider:           eDB,
 			Tracer:               opts.Tracer,
 			Reg:                  opts.Reg,
 			IsHA:                 isHA,
-			withPruner:           withPruner,
 			storageMetrics:       opts.StorageMetrics,
 			LastImportTimeMaxAge: opts.SearchOptions.MaxIndexAge, // No need to keep last_import_times older than max index age.
 		})