Keeping the routing key and value in the realization file breaks code

Remove the "routing" key and value in the realization file for now and run the model. Test having it back when the following issue is resolved.

[The "pre-release" hydrofabric uses two-character wb abbreviations in the naming convention, which breaks code in the ngen preprocessing tools hard-coded to look for three-character cat abbreviations.](https://github.com/NOAA-OWP/ngen/issues/529)

Locate the realization file and the model run referenced in the issue; no file path or command is provided. Remove the routing key and value, then run the model to confirm the preprocessing failure is avoided. Revisit testing the routing entry after issue #529 is resolved.

Written by the indexing model from the issue text.