Blender Git Loki

Remove some uneeded/irrelevant "PROP_TRANSLATE".

This sub-type is actually *only* needed for the "text" property of UI rna api (maybe we should rename it to "PROP_PY_TRANSLATE", as it is anyway only 'active' during conversion from py string to RNA string property...). In fact, I think it should only be used in RNA func properties anyway, as it stores the translated string into the property, it should only be used with "one time" RNA stuff...