Outdated nullified attributes

[skalee]

I'm going to delete these. They're probably some TC211 leftovers, not very useful here nor in any future project.

iev-data/lib/iev/termbase/term_builder.rb

Lines 72 to 85 in b07e79e

	# @todo: Unsorted Attributes
	#
	# We need to revisit this attributes and also update
	# the correct mapping with the existing attributes.
	#
	abbrev: nil,
	alt: nil,
	country_code: nil,
	review_indicator: nil,
	authoritative_source_similarity: nil,
	lineage_source: nil,
	review_status: nil,
	review_type: nil,
	review_decision_notes: nil,

They are further "used" in https://github.com/glossarist/iev-data/blob/master/lib/iev/termbase/term.rb.

@ronaldtse WDYT?

[ronaldtse]

Sure, let's delete them. We do have to keep in mind that a future import of IEV may include entries where the "status" is not "Standard" (i.e. drafts).