remove incorrect use of generics in non-generified method call

src/java/org/apache/cassandra/service/FileCacheService.java

@@ -77,7 +77,7 @@ public class FileCacheService
             }
         };
 
-        cache = CacheBuilder.<String, Queue<RandomAccessReader>>newBuilder()
+        cache = CacheBuilder.newBuilder()
                 .expireAfterAccess(AFTER_ACCESS_EXPIRATION, TimeUnit.MILLISECONDS)
                 .concurrencyLevel(DatabaseDescriptor.getConcurrentReaders())
                 .removalListener(onRemove)