remove_settings_section() counterpart to add_settings_section()

[stephenharris]

The settings API allows for settings sections to be added, but not removed.

To remove section you have to do the following

<?php
global $wp_settings_sections;
unset( $wp_settings_sections[$page][$id] )

To avoid accessing globals directly this should be wrapped inside a function.

[stephenharris]

Introduce remove_settings_section and add tests

[sc0ttkclark]

+1 on this