LibUnicode: Remove now-unused Unicode::select_pattern_with_plurality

Userland/Libraries/LibUnicode/NumberFormat.h

@@ -72,33 +72,4 @@ Vector<NumberFormat> get_unit_formats(StringView locale, StringView unit, Style
 
 Optional<String> augment_currency_format_pattern(StringView currency_display, StringView base_pattern);
 
-template<typename FormatType>
-Optional<FormatType> select_pattern_with_plurality(Vector<FormatType> const& formats, double number)
-{
-    // FIXME: This is a rather naive and locale-unaware implementation Unicode's TR-35 pluralization
-    //        rules: https://www.unicode.org/reports/tr35/tr35-numbers.html#Language_Plural_Rules
-    //        Once those rules are implemented for LibJS, we better use them instead.
-    auto find_plurality = [&](auto plurality) -> Optional<FormatType> {
-        if (auto it = formats.find_if([&](auto& patterns) { return patterns.plurality == plurality; }); it != formats.end())
-            return *it;
-        return {};
-    };
-
-    if (number == 0) {
-        if (auto patterns = find_plurality(PluralCategory::Zero); patterns.has_value())
-            return patterns;
-    } else if (number == 1) {
-        if (auto patterns = find_plurality(PluralCategory::One); patterns.has_value())
-            return patterns;
-    } else if (number == 2) {
-        if (auto patterns = find_plurality(PluralCategory::Two); patterns.has_value())
-            return patterns;
-    } else if (number > 2) {
-        if (auto patterns = find_plurality(PluralCategory::Many); patterns.has_value())
-            return patterns;
-    }
-
-    return find_plurality(PluralCategory::Other);
-}
-
 }