CrateOwnerInvitation: Remove unused crate_name() function

Author: Turbo87

src/models/crate_owner_invitation.rs

@@ -1,7 +1,6 @@
 use chrono::NaiveDateTime;
-use diesel::prelude::*;
 
-use crate::schema::{crate_owner_invitations, crates};
+use crate::schema::crate_owner_invitations;
 
 /// The model representing a row in the `crate_owner_invitations` database table.
 #[derive(Clone, Debug, PartialEq, Eq, Identifiable, Queryable)]
@@ -22,13 +21,3 @@ pub struct NewCrateOwnerInvitation {
     pub invited_by_user_id: i32,
     pub crate_id: i32,
 }
-
-impl CrateOwnerInvitation {
-    pub fn crate_name(&self, conn: &PgConnection) -> String {
-        crates::table
-            .find(self.crate_id)
-            .select(crates::name)
-            .first(&*conn)
-            .unwrap_or_else(|_| String::from("(unknown crate name)"))
-    }
-}