Update ef-core-query-cache-expiration.md

Author: waqasm78

docs2/pages/ef-core-docs/documentations/query-cache/scenarios/ef-core-query-cache-expiration.md

@@ -14,9 +14,6 @@ var ctx = new EntitiesContext();
 
 // Make the query expire after 2 hours of inactivity
 
-// (EF5 | EF6)
-var options = new CacheItemPolicy() { SlidingExpiration = TimeSpan.FromHours(2)};
-// (EF7)
 var options = new MemoryCacheEntryOptions() { SlidingExpiration = TimeSpan.FromHours(2)};
 
 var states = ctx.States.FromCache(options);