Remove PomBase from TPAs
Remove PomBase from TPAs

We no longer use ENA TPAs to get information from PomBase. We use the
JSON file directly instead so we remove the TPA information.

RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline