1 files changed, 0 insertions, 30 deletions
diff --git a/internal/commitquery/ancestor.go b/internal/commitquery/ancestor.go
deleted file mode 100644
index d050ce08..00000000
--- a/internal/commitquery/ancestor.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package commitquery
-
-// IsAncestor reports whether ancestor is reachable from descendant through
-// commit parent edges.
-func IsAncestor(ctx *Context, ancestor, descendant NodeIndex) (bool, error) {
-	if ancestor == descendant {
-		return true, nil
-	}
-
-	ancestorGeneration := ctx.EffectiveGeneration(ancestor)
-	descendantGeneration := ctx.EffectiveGeneration(descendant)
-
-	if ancestorGeneration != generationInfinity &&
-		descendantGeneration != generationInfinity &&
-		ancestorGeneration > descendantGeneration {
-		return false, nil
-	}
-
-	minGeneration := uint64(0)
-	if ancestorGeneration != generationInfinity {
-		minGeneration = ancestorGeneration
-	}
-
-	err := paintDownToCommon(ctx, ancestor, []NodeIndex{descendant}, minGeneration)
-	if err != nil {
-		return false, err
-	}
-
-	return ctx.HasAnyMarks(ancestor, markRight), nil
-}