Remove the unused f32 file type, bump version to 0.2.1

Cargo.lock

@@ -865,7 +865,7 @@ dependencies = [
 
 [[package]]
 name = "fox32"
-version = "0.1.0"
+version = "0.2.1"
 dependencies = [
  "anyhow",
  "image",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "fox32"
-version = "0.2.0"
+version = "0.2.1"
 authors = ["ry"]
 edition = "2021"
 build = "build.rs"

src/disk.rs

@@ -38,7 +38,6 @@ impl DiskController {
     pub fn select_file(&self) -> Option<File> {
         let path = FileDialog::new()
             .add_filter("Disk Image", &["img", "dsk"])
-            .add_filter("f32 Binary", &["f32"])
             .add_filter("Raw Binary", &["bin"])
             .add_filter("All Files", &["*"])
             .set_title(&format!("Select a file to insert"))