Remove references in the documentation for the Schedule, ScheduleEvents change to autoevents

[xmlviking]

Need to update the documentation in the readme.md to reflect the changes from using Schedule ScheduleEvents to the new AutoEvents as defined in the existing configuration.

reference 👍
https://github.com/edgexfoundry-holding/device-snmp-switch-go/blob/initial-checkin/cmd/res/configuration.toml