backupccl: removes old MR backup fixture

This change removes an old MR backup that was being
restored and tested against. There were no instructions
on how to regenerate the fixture in cockroachdb#69725 so it is being
deleted.

Release note: None

pkg/ccl/backupccl/restore_old_versions_test.go

@@ -21,7 +21,6 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/jobs"
 	"github.com/cockroachdb/cockroach/pkg/jobs/jobspb"
 	"github.com/cockroachdb/cockroach/pkg/keys"
-	"github.com/cockroachdb/cockroach/pkg/roachpb"
 	"github.com/cockroachdb/cockroach/pkg/server"
 	"github.com/cockroachdb/cockroach/pkg/sql"
 	"github.com/cockroachdb/cockroach/pkg/sql/catalog"
@@ -68,7 +67,6 @@ func TestRestoreOldVersions(t *testing.T) {
 	var (
 		exportDirsWithoutInterleave = testdataBase + "/exports-without-interleaved"
 		clusterDirs                 = testdataBase + "/cluster"
-		multiRegionDirs             = testdataBase + "/multi-region"
 		publicSchemaDirs            = testdataBase + "/public-schema-remap"
 		systemUsersDirs             = testdataBase + "/system-users-restore"
 		systemRoleMembersDirs       = testdataBase + "/system-role-members-restore"
@@ -97,18 +95,6 @@ func TestRestoreOldVersions(t *testing.T) {
 		}
 	})
 
-	t.Run("multi-region-restore", func(t *testing.T) {
-		skip.UnderRace(t, "very slow as it starts multiple servers")
-		dirs, err := os.ReadDir(multiRegionDirs)
-		require.NoError(t, err)
-		for _, dir := range dirs {
-			require.True(t, dir.IsDir())
-			exportDir, err := filepath.Abs(filepath.Join(multiRegionDirs, dir.Name()))
-			require.NoError(t, err)
-			t.Run(dir.Name(), runOldVersionMultiRegionTest(exportDir))
-		}
-	})
-
 	t.Run("public_schema_remap", func(t *testing.T) {
 		dirs, err := os.ReadDir(publicSchemaDirs)
 		require.NoError(t, err)
@@ -165,89 +151,6 @@ func TestRestoreOldVersions(t *testing.T) {
 	})
 }
 
-func runOldVersionMultiRegionTest(exportDir string) func(t *testing.T) {
-	return func(t *testing.T) {
-		const numNodes = 9
-		dir, dirCleanupFn := testutils.TempDir(t)
-		defer dirCleanupFn()
-		ctx := context.Background()
-
-		params := make(map[int]base.TestServerArgs, numNodes)
-		for i := 0; i < 9; i++ {
-			var region string
-			switch i / 3 {
-			case 0:
-				region = "europe-west2"
-			case 1:
-				region = "us-east1"
-			case 2:
-				region = "us-west1"
-			}
-			params[i] = base.TestServerArgs{
-				// Test fails due to inability to use multi-region
-				// abstractions by default in tenants. Tracked with #76378.
-				DisableDefaultTestTenant: true,
-				Locality: roachpb.Locality{
-					Tiers: []roachpb.Tier{
-						{Key: "region", Value: region},
-					},
-				},
-				ExternalIODir: dir,
-			}
-		}
-
-		tc := testcluster.StartTestCluster(t, numNodes, base.TestClusterArgs{
-			ServerArgsPerNode: params,
-		})
-		defer tc.Stopper().Stop(ctx)
-		require.NoError(t, os.Symlink(exportDir, filepath.Join(dir, "external_backup_dir")))
-
-		sqlDB := sqlutils.MakeSQLRunner(tc.Conns[0])
-
-		var unused string
-		var importedRows int
-		sqlDB.QueryRow(t, `RESTORE DATABASE multi_region_db FROM $1`, `nodelocal://0/external_backup_dir`).Scan(
-			&unused, &unused, &unused, &importedRows, &unused, &unused,
-		)
-		const totalRows = 12
-		if importedRows != totalRows {
-			t.Fatalf("expected %d rows, got %d", totalRows, importedRows)
-		}
-		sqlDB.Exec(t, `USE multi_region_db`)
-		sqlDB.CheckQueryResults(t, `select table_name, locality FROM [show tables] ORDER BY table_name;`, [][]string{
-			{`tbl_global`, `GLOBAL`},
-			{`tbl_primary_region`, `REGIONAL BY TABLE IN PRIMARY REGION`},
-			{`tbl_regional_by_row`, `REGIONAL BY ROW`},
-			{`tbl_regional_by_table`, `REGIONAL BY TABLE IN "us-east1"`},
-		})
-		sqlDB.CheckQueryResults(t, `SELECT region FROM [SHOW REGIONS FROM DATABASE] ORDER BY region`, [][]string{
-			{`europe-west2`},
-			{`us-east1`},
-			{`us-west1`},
-		})
-		sqlDB.CheckQueryResults(t, `SELECT * FROM tbl_primary_region ORDER BY pk`, [][]string{
-			{`1`, `a`},
-			{`2`, `b`},
-			{`3`, `c`},
-		})
-		sqlDB.CheckQueryResults(t, `SELECT * FROM tbl_global ORDER BY pk`, [][]string{
-			{`4`, `d`},
-			{`5`, `e`},
-			{`6`, `f`},
-		})
-		sqlDB.CheckQueryResults(t, `SELECT * FROM tbl_regional_by_table ORDER BY pk`, [][]string{
-			{`7`, `g`},
-			{`8`, `h`},
-			{`9`, `i`},
-		})
-		sqlDB.CheckQueryResults(t, `SELECT crdb_region, * FROM tbl_regional_by_row ORDER BY pk`, [][]string{
-			{`europe-west2`, `10`, `j`},
-			{`us-east1`, `11`, `k`},
-			{`us-west1`, `12`, `l`},
-		})
-	}
-}
-
 func restoreOldVersionTest(exportDir string) func(t *testing.T) {
 	return func(t *testing.T) {
 		params := base.TestServerArgs{}