Housekeeper is trying to delete history for item prototypes

Steps 1:
1. Create discovery rule with item prototype

agent.ping["{#MACRO}"]

2. Start zabbix server and execute housekeeper:

zabbix_server -R housekeeper_execute

Actual (when specified history storage period passes)

query [txnlev:0] [delete from history_uint where itemid=28253 and clock<1535542285]

Expected:
Zabbix does not try to search itemid that cannot have history.

Steps 2:
1. Create discovery rule with item prototype

agent.ping["{#MACRO}"] with Update interval={#MACRO}

2. Start zabbix server and execute housekeeper

Actual:
Error is logged if debug log level is set

invalid history storage '{#MACRO}' for itemid '28253'

Expected:
There should be no macro substitution for item prototypes as they can't have history and no such errors should be logged