LibJS: Remove redundant TemporalRelativeToString production

This is an editorial change in the Temporal spec.

See: https://github.com/tc39/proposal-temporal/commit/f85f953

Userland/Libraries/LibJS/Runtime/ErrorTypes.h

@@ -247,7 +247,6 @@
     M(TemporalInvalidPlainTime, "Invalid plain time")                                                                                   \
     M(TemporalInvalidPlainTimeLikeObject, "Invalid plain time-like object")                                                             \
     M(TemporalInvalidPlainYearMonth, "Invalid plain year month")                                                                        \
-    M(TemporalInvalidRelativeToString, "Invalid relative to string '{}'")                                                               \
     M(TemporalInvalidTime, "Invalid time")                                                                                              \
     M(TemporalInvalidTimeString, "Invalid time string '{}'")                                                                            \
     M(TemporalInvalidTimeStringUTCDesignator, "Invalid time string '{}': must not contain a UTC designator")                            \

Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp

@@ -1505,11 +1505,11 @@ ThrowCompletionOr<TemporalZonedDateTime> parse_temporal_relative_to_string(Globa
 
     // 1. Assert: Type(isoString) is String.
 
-    // 2. If isoString does not satisfy the syntax of a TemporalRelativeToString (see 13.33), then
-    auto parse_result = parse_iso8601(Production::TemporalRelativeToString, iso_string);
+    // 2. If isoString does not satisfy the syntax of a TemporalDateTimeString (see 13.33), then
+    auto parse_result = parse_iso8601(Production::TemporalDateTimeString, iso_string);
     if (!parse_result.has_value()) {
         // a. Throw a RangeError exception.
-        return vm.throw_completion<RangeError>(global_object, ErrorType::TemporalInvalidRelativeToString, iso_string);
+        return vm.throw_completion<RangeError>(global_object, ErrorType::TemporalInvalidDateTimeString, iso_string);
     }
 
     // 3. Let result be ? ParseISODateTime(isoString).

Userland/Libraries/LibJS/Runtime/Temporal/ISO8601.cpp

@@ -1725,14 +1725,6 @@ bool ISO8601Parser::parse_temporal_calendar_string()
         || parse_calendar_time();
 }
 
-// https://tc39.es/proposal-temporal/#prod-TemporalRelativeToString
-bool ISO8601Parser::parse_temporal_relative_to_string()
-{
-    // TemporalRelativeToString :
-    //     TemporalDateTimeString
-    return parse_temporal_date_time_string();
-}
-
 }
 
 #define JS_ENUMERATE_ISO8601_PRODUCTION_PARSERS                                        \
@@ -1744,8 +1736,7 @@ bool ISO8601Parser::parse_temporal_relative_to_string()
     __JS_ENUMERATE(TemporalTimeZoneString, parse_temporal_time_zone_string)            \
     __JS_ENUMERATE(TemporalYearMonthString, parse_temporal_year_month_string)          \
     __JS_ENUMERATE(TemporalZonedDateTimeString, parse_temporal_zoned_date_time_string) \
-    __JS_ENUMERATE(TemporalCalendarString, parse_temporal_calendar_string)             \
-    __JS_ENUMERATE(TemporalRelativeToString, parse_temporal_relative_to_string)
+    __JS_ENUMERATE(TemporalCalendarString, parse_temporal_calendar_string)
 
 Optional<ParseResult> parse_iso8601(Production production, StringView input)
 {

Userland/Libraries/LibJS/Runtime/Temporal/ISO8601.h

@@ -60,7 +60,6 @@ enum class Production {
     TemporalYearMonthString,
     TemporalZonedDateTimeString,
     TemporalCalendarString,
-    TemporalRelativeToString,
 };
 
 Optional<ParseResult> parse_iso8601(Production, StringView);
@@ -182,7 +181,6 @@ public:
     [[nodiscard]] bool parse_temporal_year_month_string();
     [[nodiscard]] bool parse_temporal_zoned_date_time_string();
     [[nodiscard]] bool parse_temporal_calendar_string();
-    [[nodiscard]] bool parse_temporal_relative_to_string();
 
 private:
     struct State {