Generate correct hashCode when callSuper and no fields included. Fixes #1505

test/transform/resource/after-delombok/EqualsAndHashCode.java

@@ -125,9 +125,7 @@ class EqualsAndHashCode4 extends EqualsAndHashCode {
 	@java.lang.SuppressWarnings("all")
 	@javax.annotation.Generated("lombok")
 	public int hashCode() {
-		final int PRIME = 59;
-		int result = 1;
-		result = result * PRIME + super.hashCode();
+		int result = super.hashCode();
 		return result;
 	}
 }