Revert "Expire cache entry after 15 minutes"

This reverts commit a19398b.

Author: broccolai

plugin/core/src/main/java/broccolai/tickets/core/service/ticket/CachedTicketService.java

@@ -26,15 +26,14 @@
 import java.util.Optional;
 import java.util.Set;
 import java.util.UUID;
-import java.util.concurrent.TimeUnit;
 import java.util.function.Predicate;
 
 @Singleton
 public final class CachedTicketService implements TicketService {
 
     private final StorageService storageService;
 
-    private final Cache<Integer, Ticket> cache = Caffeine.newBuilder().expireAfterAccess(15, TimeUnit.MINUTES).build();
+    private final Cache<Integer, Ticket> cache = Caffeine.newBuilder().build();
     private final Multimap<UUID, TicketStatus> lookups = MultimapBuilder.hashKeys().enumSetValues(TicketStatus.class).build();
 
     @Inject