Stop defaulting values incorrectly

[movermeyer]

Cldr::Export::Data::Numbers#unit uses a default not present in upstream CLDR:

ruby-cldr/lib/cldr/export/data/numbers.rb

Lines 108 to 114 in d180a44

	def unit
	@unit ||= select("numbers/currencyFormats/unitPattern").inject({}) do |result, node|
	count = node.attribute('count').value rescue 'one'
	result[count] = node.content
	result
	end
	end

There are two other places in Cldr::Export::Data::Calendars::Gregorian