scheduled_tasks is referred in application_backup.properties

[sonal-medhost]

In eCRNow 4.0.3, scheduled_tasks table is still referred in application_backup.properties.

https://github.com/drajer-health/eCRNow/blob/master/src/main/resources/application_backup.properties#L29

[nbashyam]

Remove it as part of 4.0.4