The Events Calendar: Remove the "Event Categories", "Import", and "Legacy Import" submenu items from the wp-admin > Events menu if logged-in user is an Editor or lower.

functions.php

<?php

/**
 * The Events Calendar: Remove the "Event Categories", "Import", and "Legacy
 * Import" submenu items from the wp-admin > Events menu if logged-in user
 * is an Editor or lower.
 *
 * @link https://gist.github.com/cliffordp/d7fd672cd5c003335415ffc0451116fa
 * @link https://theeventscalendar.com/support/forums/topic/hide-event-category-and-import-sub-menu-items-in-admin/#post-1368406
 * @link https://codex.wordpress.org/Roles_and_Capabilities#Capability_vs._Role_Table
 */
add_action( 'admin_menu', 'cliff_remove_events_submenu_items_for_kyle_1366101', 100 );
function cliff_remove_events_submenu_items_for_kyle_1366101() {
	if ( ! current_user_can( 'edit_pages' ) ) {
		remove_submenu_page(
			'edit.php?post_type=tribe_events',
			'edit-tags.php?taxonomy=tribe_events_cat&amp;post_type=tribe_events' // must be &amp;
		);

		remove_submenu_page(
			'edit.php?post_type=tribe_events',
			'aggregator'
		);

		remove_submenu_page(
			'edit.php?post_type=tribe_events',
			'events-importer'
		);
	}
}