Add Delete Reservation function

src/utils/schedule.ts

@@ -71,6 +71,14 @@ export function buildInterval(
   return result;
 }
 
+export const isPast = (itemDate: Date | string): boolean => {
+  if (!(itemDate instanceof Date)) {
+    itemDate = new Date(itemDate);
+  }
+  const currentDate = new Date();
+  return itemDate < currentDate;
+};
+
 export function formatDate(inputDate: string | undefined): string {
   if (!inputDate) return '';
   return date.formatDate(new Date(inputDate), 'ddd MMM Do hh:mm A');