resolve nightly rust warnings

Signed-off-by: strawberry <strawberry@puppygock.gay>

src/service/admin/mod.rs

@@ -1,6 +1,5 @@
 use std::{
     collections::BTreeMap,
-    convert::{TryFrom, TryInto},
     sync::{Arc, RwLock},
     time::Instant,
 };