The HSRP Endpoints pings are essential for computing the IsVirtualIPUnresponsive attribute.
All the IP addresses which are part of HSRP Endpoints are considered to be Virtual IP addresses. The classification is due to its behavior of being associated to more than one system.
The only way to restrict the ping is to unmanage the underlying IP address in the HSRP Endpoint. By unmanaging the IP address, the instrumentation object is removed and the ICMP ping does not occur.
If there are many IP addresses to be unmanaged, a script can be written to unmanage only those IP addresses which are part of the HSRP Endpoints.
The event computation of SwitchOverFailed event will have an impact due to the dependency on the attribute IsVirtualIPUnresponsive.