Use current_user_can
to wrap the add_filter
call:
if ( current_user_can('manage_options') ) {
} else {
add_filter('post_row_actions','remove_quick_edit',10,1);
}
manage_options
is an Admin capability. If the current user can do it, he’s an admin (on a vanilla WP installation).
See:
http://codex.wordpress.org/Roles_and_Capabilities
and
http://codex.wordpress.org/Function_Reference/current_user_can