ENSCORESW-554: API updates for release 74

ApiVersion has been updated to 74
method and column calls for deprecated tables/columns have been removed
this includes:
- dnac table
- qtl, qtl_feature and qtl_synonyms tables
- unconventional_transcript_association table
- pair_dna_align_feature_id column in dna_align_feature table
- canonical_annotation column in gene table

this API is backwards compatible, it can be used to query databases in release 73 or before
the 73 API is not forward compatible, if you want to use databases on schema 74 or beyond, use the 74 API