Problems with PDB and GOA from UniProt imports

[andrawaag]

as per: https://www.wikidata.org/wiki/User_talk:ProteinBoxBot#Stop_specific_UniProt_statement_imports

and https://www.wikidata.org/wiki/Wikidata_talk:WikiProject_Molecular_biology#Problems_with_PDB_and_GOA_from_UniProt_imports

[andrawaag]

Last PDB edits are from 2016