Revert "Keep amp-carousel on version 0.1 since 0.2 depends on experimental amp-base-carousel"

This reverts commit c93cb0b.

Author: westonruter

includes/amp-helper-functions.php

@@ -459,15 +459,6 @@ function amp_register_default_scripts( $wp_scripts ) {
 		}
 	}
 
-	if ( isset( $extensions['amp-carousel'] ) ) {
-		/*
-		 * The 0.2 version of amp-carousel depends on the amp-base-carousel component, but this is still experimental.
-		 * Also, the validator spec does not currently specify what base dependencies a given component has.
-		 * @todo Revisit once amp-base-carousel is no longer experimental. Add support for obtaining a list of extensions that depend on other extensions to include in the script dependencies when registering below.
-		 */
-		$extensions['amp-carousel'] = '0.1';
-	}
-
 	foreach ( $extensions as $extension => $version ) {
 		$src = sprintf(
 			'https://cdn.ampproject.org/v0/%s-%s.js',