chore: remove unused formatRelativeTime

lib/utils/formatters.dart

@@ -185,43 +185,6 @@ String formatFinishTime(Duration remaining, {double rate = 1.0}) {
   return formatter.format(finishTime);
 }
 
-/// Formats a DateTime as a relative time string (e.g., "just now", "5m", "3h", "2d", or a full date).
-/// Uses the `duration` package for localized unit names.
-///
-/// Used for: recent connections timestamps.
-String formatRelativeTime(DateTime date) {
-  final now = DateTime.now();
-  final difference = now.difference(date);
-
-  if (difference.inMinutes < 1) {
-    return prettyDuration(
-      Duration.zero,
-      abbreviated: true,
-      locale: _getDurationLocale(),
-      tersity: DurationTersity.minute,
-      upperTersity: DurationTersity.minute,
-    );
-  } else if (difference.inDays < 7) {
-    return prettyDuration(
-      difference,
-      abbreviated: true,
-      locale: _getDurationLocale(),
-      delimiter: ' ',
-      spacer: '',
-      tersity: DurationTersity.minute,
-      upperTersity: () {
-        if (difference.inDays >= 1) return DurationTersity.day;
-        if (difference.inHours >= 1) return DurationTersity.hour;
-        return DurationTersity.minute;
-      }(),
-      maxUnits: 1,
-    );
-  } else {
-    final formatter = DateFormat.yMd(LocaleSettings.currentLocale.languageCode);
-    return formatter.format(date);
-  }
-}
-
 /// Takes a list of strings and returns one long string with each item in the list concatenated by a bullet
 String toBulletedString(List<String> parts) {
   return parts.join(' · ');