Revert "clippy fixes"

This reverts commit f6e94cfd32.

crates/shared/src/backpack/mod.rs

@@ -1,61 +0,0 @@
-mod backpack_ui;
-mod ui_head_state;
-
-use crate::{
-    cash::CashCollectEvent, global_observer, head_drop::HeadCollected, heads::HeadState,
-    heads_database::HeadsDatabase,
-};
-pub use backpack_ui::BackpackAction;
-use bevy::prelude::*;
-pub use ui_head_state::UiHeadState;
-
-#[derive(Resource, Default)]
-pub struct Backpack {
-    pub heads: Vec<HeadState>,
-}
-
-impl Backpack {
-    pub fn reloading(&self) -> bool {
-        for head in &self.heads {
-            if !head.has_ammo() {
-                return true;
-            }
-        }
-
-        false
-    }
-
-    pub fn contains(&self, head_id: usize) -> bool {
-        self.heads.iter().any(|head| head.head == head_id)
-    }
-
-    pub fn insert(&mut self, head_id: usize, heads_db: &HeadsDatabase) {
-        self.heads.push(HeadState::new(head_id, heads_db));
-    }
-}
-
-#[derive(Event)]
-pub struct BackbackSwapEvent(pub usize);
-
-pub fn plugin(app: &mut App) {
-    app.init_resource::<Backpack>();
-
-    app.add_plugins(backpack_ui::plugin);
-
-    global_observer!(app, on_head_collect);
-}
-
-fn on_head_collect(
-    trigger: Trigger<HeadCollected>,
-    mut cmds: Commands,
-    mut backpack: ResMut<Backpack>,
-    heads_db: Res<HeadsDatabase>,
-) {
-    let HeadCollected(head) = *trigger.event();
-
-    if backpack.contains(head) {
-        cmds.trigger(CashCollectEvent);
-    } else {
-        backpack.insert(head, heads_db.as_ref());
-    }
-}