Remove references to glium (#5626)

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* Remove references to `glium` backend, because it is deprecated since
egui v0.18.0
* [x] I have followed the instructions in the PR template

crates/eframe/CHANGELOG.md

@@ -1,7 +1,7 @@
 # Changelog for eframe
 All notable changes to the `eframe` crate.
 
-NOTE: [`egui-winit`](../egui-winit/CHANGELOG.md), [`egui_glium`](../egui_glium/CHANGELOG.md), [`egui_glow`](../egui_glow/CHANGELOG.md),and [`egui-wgpu`](../egui-wgpu/CHANGELOG.md) have their own changelogs!
+NOTE: [`egui-winit`](../egui-winit/CHANGELOG.md), [`egui_glow`](../egui_glow/CHANGELOG.md),and [`egui-wgpu`](../egui-wgpu/CHANGELOG.md) have their own changelogs!
 
 This file is updated upon each release.
 Changes since the last release can be found at <https://github.com/emilk/egui/compare/latest...HEAD> or by running the `scripts/generate_changelog.py` script.

crates/eframe/src/native/file_storage.rs

@@ -96,7 +96,7 @@ fn roaming_appdata() -> Option<PathBuf> {
 // ----------------------------------------------------------------------------
 
 /// A key-value store backed by a [RON](https://github.com/ron-rs/ron) file on disk.
-/// Used to restore egui state, glium window position/size and app state.
+/// Used to restore egui state, glow window position/size and app state.
 pub struct FileStorage {
     ron_filepath: PathBuf,
     kv: HashMap<String, String>,

crates/egui_demo_lib/Cargo.toml

@@ -10,7 +10,7 @@ license.workspace = true
 readme = "README.md"
 repository = "https://github.com/emilk/egui/tree/master/crates/egui_demo_lib"
 categories = ["gui", "graphics"]
-keywords = ["glium", "egui", "gui", "gamedev"]
+keywords = ["glow", "egui", "gui", "gamedev"]
 include = [
     "../LICENSE-APACHE",
     "../LICENSE-MIT",