I have a strange issue.
One of the site feature contains element with Fields definitions. One of the fields is TaxonomyFieldType with corresponding Note.
During feature activation proper term set is associated whit this field.
When I remove site collection where the feature was activated, and then recreate it, I can see that my taxonomy field is still present (despite site collection delete). But it is in some kind of "ghost" stage. I cannot delete it from UI because"Site columns which are included in content types cannot be deleted.", and when I try to look for it with power-shell or code, it looks like this field does not exist and I cannot find it.
How can I delete this field?