Removes the 'change' button from the PMPro membership account page

my_pmpro_remove_change_level_link.php

<?php

// Copy from below here

function my_pmpro_remove_change_level_link() {
	?>
	<style>
	#pmpro_actionlink-change {
		display: none;
	}
	</style>
	<?php
}
add_action( 'pmpro_member_action_links_before', 'my_pmpro_remove_change_level_link' );