resolve fontType enum

[jtauber]

The current fontType definition is given as:

"fontType": {
    "type": "string",
    "enum": ["openType", "bitmap", "trueType", "type1"]
}

but based on the internal metadata for the sb_typesetScripture example, there seems to be a need for an other value.

[jag3773]

Simplest solution here is to drop fontType specification in the metadata because we can't think of a good use case for that information.