Cleanup uniquehash files

[ryanrolds]

Description

The *.pb.uniquehash.go shouldn't have committed. They were left from a failed command.

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

[sam-heilbron]

Given that CI did pass successfully, is there a gap we have identified in our codegen job that allows code to merge that should not?

[ryanrolds]

I'm pretty sure these were intermediate files that I accidentally committed thinking they were updated .pb.go files. It may be useful to add them to the .gitignore.