[MDX] Remove verbose migration logs (#5667)

* chore: remove markdown extends warnings

* chore: changeset

1 files changed, 0 insertions, 14 deletions

diff --git a/packages/integrations/mdx/src/utils.ts b/packages/integrations/mdx/src/utils.ts
index e803dc300..516cfafb2 100644
--- a/packages/integrations/mdx/src/utils.ts
+++ b/packages/integrations/mdx/src/utils.ts
@@ -83,21 +83,7 @@ export function jsToTreeNode(
 	};
 }
 
-// TODO: remove for 1.0
-export function handleExtendsNotSupported(pluginConfig: any) {
-	if (
-		typeof pluginConfig === 'object' &&
-		pluginConfig !== null &&
-		(pluginConfig as any).hasOwnProperty('extends')
-	) {
-		throw new Error(
-			`[MDX] The "extends" plugin option is no longer supported! Astro now extends your project's \`markdown\` plugin configuration by default. To customize this behavior, see the \`extendPlugins\` option instead: https://docs.astro.build/en/guides/integrations-guide/mdx/#extendplugins`
-		);
-	}
-}
-
 // Following utils taken from `packages/astro/src/core/path.ts`:
-
 export function isRelativePath(path: string) {
 	return startsWithDotDotSlash(path) || startsWithDotSlash(path);
 }