There is no option to remove default_term using register_taxonomy() or unregister_taxonomy()

[danielpietrasik]

1. I registered a new taxonomy using ​register_taxonomy() function.

2. I set default_term.

3. After that i removed default_term (I changed my mind).

The function ​register_taxonomy() did not remove default_term. The default_term is still selected.

It's not possible to clear old value of default_term by ​register_taxonomy().

The function ​unregister_taxonomy() also doesn't work.

[danielpietrasik]

If we know that default_term already exists. We can use ​delete_option to remove default_term, but in my opinion its not a good solution. The ​delete_option should be build-in in ​register_taxonomy() function or/and ​unregister_taxonomy() function.