chore: remove unused legacy departure card styles and dead code

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

public/css/components.css

@@ -768,19 +768,7 @@ body.landscape .countdown-large.soon {
     text-shadow: 0 0 8px #f39c12, 0 0 12px #f39c12, 0 0 16px rgba(243, 156, 18, 0.8);
 }
 
-/* Time range (legacy) */
-.time-range {
-    font-size: 0.85em;
-    color: var(--color-text-muted);
-    font-weight: 500;
-    white-space: nowrap;
-}
-
-body.dark-mode .time-range {
-    color: var(--color-text-secondary);
-}
-
-/* Next departures (replaces time-range) */
+/* Next departures */
 .next-departures {
     font-size: 0.8em;
     color: var(--color-text-muted);
@@ -1510,10 +1498,6 @@ body.dark-mode .config-search-input:focus-visible {
         max-width: 75px;
     }
 
-    .time-range {
-        font-size: 0.75em;
-    }
-
     .direction-arrow-box {
         width: 20px;
         height: 20px;