Revert “Fix yesexpr in en_DK locale”

	This reverts commit 8f755150

	Revert “Fix yesexpr in en_DK locale”.

	* locales/en_DK (LC_MESSAGES): Restore original yesexpr, noexpr,
	yesstr, nostr. Convert them to ASCII and add a comment why
	we want to have them like this.