Cleanup: Remove digit group separators from strgen and languages

src/language.h

@@ -35,10 +35,6 @@ struct LanguagePackHeader {
 	char number_format[64];
 	/** The raw formatting string for number abbreviations. */
 	char number_abbreviations[256];
-	/** Thousand separator used for anything not currencies */
-	char digit_group_separator[8];
-	/** Thousand separator used for currencies */
-	char digit_group_separator_currency[8];
 	/** Decimal separator */
 	char digit_decimal_separator[8];
 	uint16_t missing;     ///< number of missing strings.