removing NCBIGene prefix as it is already defined in bican_biolink

Author: puja-trivedi

linkml-schema/genome_annotation.yaml

@@ -9,7 +9,7 @@ prefixes:
   bican: https://identifiers.org/brain-bican/vocab/
   schema: http://schema.org/
   NCBIAssembly: https://www.ncbi.nlm.nih.gov/assembly/
-  NCBIGene: https://www.ncbi.nlm.nih.gov/gene/
+  #NCBIGene: https://www.ncbi.nlm.nih.gov/gene/ (already defined in bican_biolink)
   NCBITaxon: https://www.ncbi.nlm.nih.gov/taxonomy/
 
 imports: