tracks/perl6/exercises/grade-school/example.yaml in trackler-2.2.1.95 vs tracks/perl6/exercises/grade-school/example.yaml in trackler-2.2.1.96

@@ -1,8 +1,7 @@
 exercise: GradeSchool
-version: 2
-plan: 19
-imports: Roster
+version: 3
+plan: 18
 tests: |-
   subtest "Roster class methods", {
     plan 3;
     ok ::('Roster').can($_), $_ for <add-student list-grade list-all>;
   }