Obsolete terms in mappings tables

[bgyori]

As ontologies and other identifiers resources evolve, terms are sometimes deprecated or replaced by other terms. Through some downstream processes, I found a number of terms appearing in the curated mappings table that are not valid anymore. I don't have a complete list but these are some examples:

• CHEBI:52998
• GO:0016246
• DOID:0080091
• DOID:10919
• DOID:0111794
• etc

Some terms are obsolete while others have been replaced. I suppose when it comes to replacements, we could update mappings to use the new ID which is currently valid as a replacement. For terms that are obsolete without a replacement, perhaps keeping the mappings as is, and handling obsolete status downstream of Biomappings makes sense.