Remove attachment of global labels upon ingestion

retrieval/targetmanager.go

@@ -51,7 +51,6 @@ type TargetProvider interface {
 // target providers.
 type TargetManager struct {
 	mtx            sync.RWMutex
-	globalLabels   model.LabelSet
 	sampleAppender storage.SampleAppender
 	running        bool
 	done           chan struct{}
@@ -356,7 +355,6 @@ func (tm *TargetManager) ApplyConfig(cfg *config.Config) bool {
 	tm.mtx.Lock()
 	defer tm.mtx.Unlock()
 
-	tm.globalLabels = cfg.GlobalConfig.Labels
 	tm.providers = providers
 	return true
 }
@@ -481,7 +479,6 @@ func (tm *TargetManager) targetsFromGroup(tg *config.TargetGroup, cfg *config.Sc
 				model.MetricsPathLabel: model.LabelValue(cfg.MetricsPath),
 				model.JobLabel:         model.LabelValue(cfg.JobName),
 			},
-			tm.globalLabels,
 		}
 		for _, lset := range labelsets {
 			for ln, lv := range lset {