Take relays consumption in account

central_backend/src/constants.rs

@@ -1,11 +1,6 @@
-use std::time::Duration;
-
 /// Name of the cookie that contains session information
 pub const SESSION_COOKIE_NAME: &str = "X-session-cookie";
 
-/// Energy refresh operations interval
-pub const ENERGY_REFRESH_INTERVAL: Duration = Duration::from_secs(30);
-
 /// Maximum time after a ping during which a device is considered "up"
 pub const DEVICE_MAX_PING_TIME: u64 = 30;