model-doc-generator.pl now calls BP::Loader::Mapper::DocumentationGenerator
model-doc-generator.pl now calls BP::Loader::Mapper::DocumentationGenerator

As all the code has been properly transferred from model-doc-generator.pl
to BP::Loader::Mapper::DocumentationGenerator, it does not make sense to
keep code duplication.

This utility is going to be deprecated, in favour of model-mapper.pl

inab/BP-Schema-tools