docs: add swizzle delete tip (#10759)

Author: effozen

website/docs/swizzling.mdx

@@ -94,6 +94,12 @@ npm run swizzle -- --list
 
 Use `--help` to see all available CLI options, or refer to the reference [swizzle CLI documentation](./cli.mdx#docusaurus-swizzle).
 
+:::tip Removing Unneeded Swizzled Components
+
+If you decide that a previously swizzled component is no longer necessary, you can simply remove its file(s) from the `src/theme` directory. After removing the component, make sure to restart your development server to ensure the changes are properly reflected.
+
+:::
+
 :::note
 
 After swizzling a component, **restart your dev server** in order for Docusaurus to know about the new component.