#### What type of PR is this?
<!--
Add one of the following kinds:
/kind bug
/kind cleanup
/kind documentation
/kind feature
-->
Removes the build/rpm submodule that's no longer needed / used
#### What this PR does / why we need it:
Fixes the issue of trying to build the Dockerfile: docker build -t
kompose https://github.com/kubernetes/kompose.git#main
#### Which issue(s) this PR fixes:
<!--
*Automatically closes linked issue when PR is merged.
Usage: `Fixes #<issue number>`, or `Fixes (paste link of issue)`.
-->
N/A
#### Special notes for your reviewer:
Signed-off-by: Charlie Drage <charlie@charliedrage.com>