disable_comment_moderation.php

// Disallow comment moderation
function block_bulk_comments_actions($actions) {
  unset($actions['unapprove']);
  unset($actions['approve']);
  unset($actions['spam']);
  unset($actions['trash']);
 
  return $actions;
}
 
function block_comment_row_actions($actions, $comment) {
	unset($actions['reply']);
	unset($actions['approve']);
	unset($actions['unapprove']);
	if($comment->user_id != get_current_user_id()) {
		unset($actions['quickedit']);
		unset($actions['edit']);
		unset($actions['trash']);
	}
	unset($actions['spam']);
  return $actions;
}

if (!current_user_can('moderate_comments')) {
  add_filter('bulk_actions-edit-comments', 'block_bulk_comments_actions');
  add_filter('comment_row_actions', 'block_comment_row_actions', 10, 2);
}

function UM_no_comment_moderation() {
	global $pagenow;
	if (!current_user_can('moderate_comments') && $pagenow == 'comment.php') {
		if(get_current_user_id() != get_comment($_GET['c'])->user_id) {
			wp_redirect(home_url().'/wp-admin/edit-comments.php'); exit;
		}
	}
}
add_action('admin_init', 'no_comment_moderation');