diff --git a/internal/postgres/parent_directories_test.go b/internal/postgres/parent_directories_test.go
deleted file mode 100644
index b027f2b..0000000
--- a/internal/postgres/parent_directories_test.go
+++ /dev/null
@@ -1,104 +0,0 @@
-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package postgres
-
-import (
-	"context"
-	"testing"
-
-	"github.com/google/go-cmp/cmp"
-	"github.com/lib/pq"
-	"golang.org/x/pkgsite/internal/testing/sample"
-)
-
-func TestToTsvectorParentDirectoriesStoredProcedure(t *testing.T) {
-	ctx, cancel := context.WithTimeout(context.Background(), testTimeout*2)
-	defer cancel()
-
-	for _, tc := range []struct {
-		path, modulePath string
-		want             []string
-	}{
-		{
-			path:       "github.com/a/b",
-			modulePath: "github.com/a/b",
-			want:       []string{"github.com/a/b"},
-		},
-		{
-			path:       "github.com/a/b/c",
-			modulePath: "github.com/a/b",
-			want: []string{
-				"github.com/a/b",
-				"github.com/a/b/c",
-			},
-		},
-		{
-			path:       "github.com/a/b/c/github.com/a/b/c",
-			modulePath: "github.com/a/b",
-			want: []string{
-				"github.com/a/b",
-				"github.com/a/b/c",
-				"github.com/a/b/c/github.com",
-				"github.com/a/b/c/github.com/a",
-				"github.com/a/b/c/github.com/a/b",
-				"github.com/a/b/c/github.com/a/b/c",
-			},
-		},
-		{
-			path:       "bufio",
-			modulePath: "std",
-			want: []string{
-				"bufio",
-			},
-		},
-		{
-			path:       "archive/zip",
-			modulePath: "std",
-			want: []string{
-				"archive",
-				"archive/zip",
-			},
-		},
-	} {
-		t.Run(tc.path, func(t *testing.T) {
-			defer ResetTestDB(testDB, t)
-
-			var suffix string
-			switch tc.modulePath {
-			case "std":
-				suffix = tc.path
-			case tc.path:
-				suffix = ""
-			default:
-				suffix = tc.path[len(tc.modulePath)+1:]
-			}
-			m := sample.LegacyModule(tc.modulePath, sample.VersionString, suffix)
-			if err := testDB.InsertModule(ctx, m); err != nil {
-				t.Fatal(err)
-			}
-
-			var got []string
-			err := testDB.db.QueryRow(ctx,
-				`SELECT tsvector_to_array(tsv_parent_directories) FROM packages WHERE path = $1;`,
-				tc.path).Scan(pq.Array(&got))
-			if err != nil {
-				t.Fatal(err)
-			}
-			if diff := cmp.Diff(tc.want, got); diff != "" {
-				t.Errorf("tsvector_to_array FROM packages for %q mismatch (-want +got):\n%s", tc.path, diff)
-			}
-
-			err = testDB.db.QueryRow(ctx,
-				`SELECT tsvector_to_array(tsv_parent_directories) FROM search_documents WHERE package_path = $1;`,
-				tc.path).Scan(pq.Array(&got))
-			if err != nil {
-				t.Fatal(err)
-			}
-			if diff := cmp.Diff(tc.want, got); diff != "" {
-				t.Errorf("tsvector_to_array FROM search_documents for %q mismatch (-want +got):\n%s", tc.path, diff)
-			}
-		})
-	}
-}