Remove unused ODM2.apiCustomType.py and ODM2.models_sqlite.py

[emiliom]

It's been mentioned before, back in January and earlier, that ODM2.apiCustomType.py and ODM2.models_sqlite.py are no longer used.

@sreeder, can we remove them? Or just park them in a branch. FYI, I think @cdesyoun previously said that he created models_sqlite.py and it's no longer needed for anything.

[sreeder]

@emiliom these have been removed in the pull request #61

[emiliom]

Great!