backend test: Always remove files for TestList

internal/backend/test/tests.go

@@ -675,8 +675,6 @@ func (s *Suite) TestBackend(t *testing.T) {
 			t.Fatalf("lists aren't equal, want:\n  %v\n  got:\n%v\n", IDs, list)
 		}
 
-		// remove content if requested
-		if test.TestCleanupTempDirs {
 		var handles []restic.Handle
 		for _, ts := range testStrings {
 			id, err := restic.ParseID(ts.id)
@@ -694,7 +692,6 @@ func (s *Suite) TestBackend(t *testing.T) {
 		test.OK(t, s.delayedRemove(t, b, handles...))
 	}
 }
-}
 
 // TestDelete tests the Delete function.
 func (s *Suite) TestDelete(t *testing.T) {