Remove TextureManager.

src/sprite.rs

@@ -1,4 +1,3 @@
-use std::collections::HashMap;
 use sdl2::render::{Texture, Renderer};
 use sdl2::rect::Rect;
 
@@ -9,17 +8,6 @@ pub trait Sprite {
 }
 
 
-pub struct TextureManager<'a> {
-    textures: HashMap<String, &'a Texture>
-}
-
-impl<'a> TextureManager<'a> {
-    pub fn insert_texture(&mut self, key: String, texture: &'a Texture) {
-        self.textures.insert(key, texture);
-    }
-}
-
-
 pub struct StaticSprite<'a> {
     texture: &'a Texture,
     x: i32,