global: removal of reana.yaml
global: removal of reana.yaml

* Removes `reana.yaml` that was mistakenly added to the ``reana-client``
  repository.

Signed-off-by: Tibor Simko <c7116e45300b163846dc01f3ed02116e3f8ef7a5@cern.ch>

reanahub/reana-client,reanahub/reana-client