Fix unused warnings when builder feature is disabled

src/builder/create_command.rs

@@ -1,4 +1,5 @@
 use std::borrow::Cow;
+use std::collections::HashMap;
 
 #[cfg(feature = "http")]
 use crate::http::Http;

src/builder/create_interaction_response.rs

@@ -1,4 +1,5 @@
 use std::borrow::Cow;
+use std::collections::HashMap;
 
 use serde_json::json;
 

src/model/mod.rs

@@ -62,8 +62,6 @@ pub use self::timestamp::Timestamp;
 /// use serenity::model::prelude::*;
 /// ```
 pub mod prelude {
-    pub(crate) use std::collections::HashMap;
-
     pub(crate) use serde::{Deserialize, Deserializer};
 
     pub use super::guild::automod::EventType as AutomodEventType;