html_to_markdown: Remove unused examples (#12658)

Marshall Bowers created 

This PR removes the unused `examples` from the `html_to_markdown` crate.

I was just using these to dogfood the parsing initially, but now that
it's wired up in the Assistant, the examples are no longer useful.

Release Notes:

- N/A

Change summary

crates/html_to_markdown/examples/test.rs | 29 --------------------------
1 file changed, 29 deletions(-)

Detailed changes

crates/html_to_markdown/examples/test.rs 🔗 

@@ -1,29 +0,0 @@
-use html_to_markdown::convert_rustdoc_to_markdown;
-use indoc::indoc;
-
-pub fn main() {
-    let html = indoc! {"
-        <html>
-            <body>
-                <h1>Hello World</h1>
-                <p>
-                    Here is some content.
-                </p>
-                <h2>Some items</h2>
-                <ul>
-                    <li>One</li>
-                    <li>Two</li>
-                    <li>Three</li>
-                </ul>
-            </body>
-        </html>
-    "};
-    // To test this out with some real input, try this:
-    //
-    // ```
-    // let html = include_str!("/path/to/zed/target/doc/gpui/index.html");
-    // ```
-    let markdown = convert_rustdoc_to_markdown(html.as_bytes()).unwrap();
-
-    println!("{markdown}");
-}