Remove unused dependencies and avoid instantiating FontCache in tests

gpui/src/presenter.rs

@@ -22,7 +22,7 @@ impl Presenter {
     pub fn new(
         window_id: usize,
         font_cache: Arc<FontCache>,
-        fonts: Arc<dyn platform::FontSystem>,
+        text_layout_cache: TextLayoutCache,
         asset_cache: Arc<AssetCache>,
         app: &MutableAppContext,
     ) -> Self {
@@ -31,7 +31,7 @@ impl Presenter {
             rendered_views: app.render_views(window_id).unwrap(),
             parents: HashMap::new(),
             font_cache,
-            text_layout_cache: TextLayoutCache::new(fonts),
+            text_layout_cache,
             asset_cache,
         }
     }