Also treat given locations as known
Also treat given locations as known

Without this the program will try to map sequences which have already
been given a location. This does not need to be done so we should
prevent it from happening.

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