Remove unnecessary egui dependency, use eframe::egui re-exports instead

Cargo.lock

@@ -1068,7 +1068,6 @@ name = "epub-read"
 version = "0.1.0"
 dependencies = [
  "eframe",
- "egui",
  "epub",
  "rfd",
  "serde",

Cargo.toml

@@ -10,7 +10,6 @@ path = "src/main.rs"
 
 [dependencies]
 eframe = "0.31"
-egui = "0.31"
 epub = "1.2"
 rfd = "0.15"
 serde = { version = "1", features = ["derive"] }

src/app.rs

@@ -7,5 +7,5 @@ impl App {
 }
 
 impl eframe::App for App {
-    fn update(&mut self, _ctx: &egui::Context, _frame: &mut eframe::Frame) {}
+    fn update(&mut self, _ctx: &eframe::egui::Context, _frame: &mut eframe::Frame) {}
 }

src/font.rs

@@ -1 +1 @@
-pub fn setup_fonts(_ctx: &egui::Context) {}
+pub fn setup_fonts(_ctx: &eframe::egui::Context) {}