remove polyfill

docs/getting-started/form-controls.md

@@ -6,8 +6,6 @@ Shoelace solves this problem by using the [`formdata`](https://developer.mozilla
 
 ?> Shoelace uses event listeners to intercept the form's `formdata` and `submit` events. This allows it to inject data and trigger validation as necessary. If you're also attaching an event listener to the form, _you must attach it after Shoelace form controls are connected to the DOM_, otherwise your logic will run before Shoelace has a chance to inject form data and validate form controls.
 
-?> If you're using an older browser that doesn't support the `formdata` event, a lightweight polyfill will be automatically applied to ensure forms submit as expected.
-
 ## Data Serialization
 
 Serialization is just a fancy word for collecting form data. If you're relying on standard form submissions, e.g. `<form action="...">`, you can probably skip this section. However, most modern apps use the [Fetch API](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API) or a library such as [axios](https://github.com/axios/axios) to submit forms using JavaScript.

docs/resources/changelog.md

@@ -16,6 +16,7 @@ New versions of Shoelace are released as-needed and generally occur when a criti
 - Fixed a bug in `<sl-input>` that caused the `sl-change` event to be incorrectly emitted when the value was set programmatically [#917](https://github.com/shoelace-style/shoelace/issues/917)
 - Fixed a bug in `<sl-input>` and `<sl-textarea>` that made it impossible to disable spell checking [#1061](https://github.com/shoelace-style/shoelace/issues/1061)
 - Fixed non-modal behaviors in `<sl-drawer>` when using the `contained` attribute [#1051](https://github.com/shoelace-style/shoelace/issues/1051)
+- Removed the `formdata` event polyfill since it's now available in the last two versions of all major browsers
 
 ## 2.0.0-beta.86