reverted back the temporary workaound for the pdb residue mapping (fix https://github.com/cBioPortal/cbioportal/issues/3286)
reverted back the temporary workaound for the pdb residue mapping (fix https://github.com/cBioPortal/cbioportal/issues/3286)

Signed-off-by: Onur Sumer <s.onur.sumer@gmail.com>

Former-commit-id: 79cafb9590d4aef339850734a70cabc7400fa9c8
cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend