Driver / VUS filter does not work as expected

[onursumer]

https://www.cbioportal.org/results/mutations?cancer_study_list=ov_tcga_pub&cancer_study_id=ov_tcga_pub&genetic_profile_ids_PROFILE_MUTATION_EXTENDED=ov_tcga_pub_mutations&Z_SCORE_THRESHOLD=2.0&case_set_id=ov_tcga_pub_3way_complete&gene_list=BRCA1%20BRCA2&gene_set_choice=user-defined-list

Unselecting the Driver/VUS filter has no effect now. It used to filter out all the mutations under that category.

We may also want to add tests for this to make sure to catch the regression next time.