Remove tcode theme

General MR

Summary

Remove theme from the plugin, this theme will be added after deployment using another container, no need to have it in the plugin. We use it as a proof of concept, now that we know it works, the next step is to have an external project in gitlab with only themes.

Relevant logs/screenshots

Just a bunch of deletes

Linked Issue

https://jira.il4.dso.mil/browse/P1CSDEV-114

Upgrade Notices

n/a