Update crates to latest version.

src/database/guild.rs

@@ -1,4 +1,4 @@
-use bson::{bson, doc};
+use bson::doc;
 use serde::{Deserialize, Serialize};
 
 use super::get_collection;

src/database/mutual.rs

@@ -1,6 +1,6 @@
 use super::get_collection;
 
-use bson::{bson, doc};
+use bson::doc;
 use mongodb::options::FindOneOptions;
 
 /*pub struct MutualGuild {

src/database/permissions.rs

@@ -4,7 +4,7 @@ use crate::guards::auth::UserRef;
 use crate::guards::channel::ChannelRef;
 use crate::guards::guild::GuildRef;
 
-use bson::{bson, doc};
+use bson::doc;
 use num_enum::TryFromPrimitive;
 
 #[derive(Debug, PartialEq, Eq, TryFromPrimitive)]