rng-only change

[rscohn2]

Description

Please include a summary of the change. Please also include relevant
motivation and context. See
contribution guidelines
for more details. If the change fixes an issue not documented in the project's
Github issue tracker, please document all steps necessary to reproduce it.

Fixes # (GitHub issue)

Checklist

All Submissions

• Do all unit tests pass locally? Attach a log.
• Have you formatted the code using clang-format?

New interfaces

• Have you provided motivation for adding a new feature as part of RFC and
  it was accepted? # (RFC)
• What version of oneAPI spec the interface is targeted?
• Complete New features checklist

New features

• Have you provided motivation for adding a new feature?
• Have you added relevant tests?

Bug fixes

• Have you added relevant regression tests?
• Have you included information on how to reproduce the issue (either in a
  GitHub issue or in this PR)?