refactor(test): remove dead code and consolidate test utilities

tests/text.rs

@@ -1,9 +1,9 @@
 use pacman::texture::{sprite::SpriteAtlas, text::TextTexture};
 
-use crate::common::create_atlas;
-
 mod common;
 
+use common::create_atlas;
+
 /// Helper function to get all characters that should be in the atlas
 fn get_all_chars() -> String {
     let mut chars = Vec::new();