Polishing.

Removed instanceof assert.

See spring-projects#2857
Original pull request spring-projects#2859

Author: schauder

spring-data-jpa/src/main/java/org/springframework/data/jpa/provider/HibernateJpaParametersParameterAccessor.java

@@ -97,8 +97,6 @@ public Date unwrapDate(Object value) {
 				? typedParameterValue.getValue() //
 				: value;
 
-		Assert.isInstanceOf(Date.class, extracted, "Value must be either of type Date or a Date wrapped in a TypedParameterValue");
-
 		return (Date) extracted;
 	}
 }