Limits the visibility of a level on the Levels page. Unlike setting "Allow Signups" members can access the checkout page to renew if needed.

pmpro_hide_level_from_levels_page.php

<?php
//Save the pmpro_show_level_ID field
function pmpro_hide_level_from_levels_page_save( $level_id ) {
	if( $level_id <= 0 ) {
		return;
	}
	$limit = $_REQUEST['pmpro_show_level'];
	update_option( 'pmpro_show_level_'.$level_id, $limit );
}
add_action( 'pmpro_save_membership_level','pmpro_hide_level_from_levels_page_save' );

//Display the setting for the pmpro_show_level_ID field on the Edit Membership Level page
function pmpro_hide_level_from_levels_page_settings() {
	?>
	<h3 class="topborder"><?php _e( 'Membership Level Visibility', 'pmpro' ); ?></h3>
	<table class="form-table">
		<tbody>
			<tr>
				<th scope="row" valign="top"><label for="pmpro_show_level"><?php _e( 'Show Level', 'pmpro' );?>:</label></th>
				<td>
					<?php		
						if(isset($_REQUEST['edit'])) {
							$edit = $_REQUEST['edit'];
							$pmpro_show_level = get_option('pmpro_show_level_'.$edit);
							if($pmpro_show_level === false) {
								$pmpro_show_level = 1;
							}
						} else {
							$limit = '';
						}
					?>
					<select id="pmpro_show_level" name="pmpro_show_level">
						<option value="1" <?php if($pmpro_show_level == 1) { ?>selected="selected"<?php } ?>><?php _e('Yes, show this level in the [pmpro_levels] display.', 'pmpro');?></option>

						<option value="0" <?php if(!$pmpro_show_level) { ?>selected="selected"<?php } ?>><?php _e('No, hide this level in the [pmpro_levels] display.', 'pmpro');?></option>
					</select>
				</td>
			</tr>
		</tbody>
	</table>
	<?php 
}
add_action( 'pmpro_membership_level_after_other_settings', 'pmpro_hide_level_from_levels_page_settings' );

//Filter the hidden levels from the pmpro_levels_array
function pmpro_hide_level_from_levels_page_levels( $levels ) {	
	$new_levels = array();
	foreach( $levels as $key => $level ) {
		$pmpro_show_level = get_option( 'pmpro_show_level_'.$level->id );
		
		//always include levels where the setting was never saved
		if( $pmpro_show_level === false ) {
			$pmpro_show_level = true;
		}
		
		//build the new filtered levels array
		if( !empty( $pmpro_show_level ) ) {
			$new_levels[$key] = $level;
		}
	}
	return $new_levels;
}
add_filter( 'pmpro_levels_array', 'pmpro_hide_level_from_levels_page_levels' );

This recipe is included in the blog post on "How to Design Your Membership Levels Page: Custom Order, Dynamic List, Hide the Display, or Skip it Mega Post" at Paid Memberships Pro here: https://www.paidmembershipspro.com/memberships-levels-page-order-hide-display-skip-mega-post/