Move FriendRequestSchema to schemas

src/types/entities/relationship.rs

@@ -30,9 +30,3 @@ pub enum RelationshipType {
     Friends = 1,
     None = 0,
 }
-
-#[derive(Deserialize, Serialize, Debug)]
-pub struct FriendRequestSendSchema {
-    pub username: String,
-    pub discriminator: Option<String>,
-}