Normalize baseline and source history evidence

internal/engine/load_metadata.go

@@ -147,28 +147,6 @@ func appendInputOriginEvent(events map[string][]Change, baseline map[string][]Ch
 	appendInputChangeEvent(events, baseline, pointer, Change{Path: path.clone(), Origin: cloneOrigin(origin)})
 }
 
-func originRepresentedByChange(path Path, origin Origin, change Change) bool {
-	if change.Path.String() == path.String() {
-		return originContainedBy(origin, change.Origin)
-	}
-	if !pathContains(change.Path, path) || origin.Layer != change.Origin.Layer || origin.Operation != change.Origin.Operation {
-		return false
-	}
-	// A subtree replacement already records its descendants' contributions.
-	// Their coordinates differ from the container's, but their sources must be
-	// covered by the operation; matching only the precedence role is insufficient.
-	recordedSources := make(map[string]struct{}, len(change.Origin.Locations))
-	for _, recorded := range change.Origin.Locations {
-		recordedSources[recorded.SourceID] = struct{}{}
-	}
-	for _, location := range origin.Locations {
-		if _, found := recordedSources[location.SourceID]; !found {
-			return false
-		}
-	}
-	return true
-}
-
 func appendInputChangeEvent(events map[string][]Change, baseline map[string][]Change, pointer string, value Change) {
 	change := cloneChange(value)
 	history := events[pointer]