wp-includes/class-wp-customize-manager.php:3935Removes a customize panel.
$idstring public function remove_panel( $id ) { // Removing core components this way is _doing_it_wrong(). if ( in_array( $id, $this->components, true ) ) { _doing_it_wrong( __METHOD__, sprintf( /* translators: 1: Panel ID, 2: Link to 'customize_loaded_components' filter reference. */ __( 'Removing %1$s manually will cause PHP warnings. Use the %2$s filter instead.' ), $id, sprintf( '<a href="%1$s">%2$s</a>', esc_url( 'https://developer.wordpress.org/reference/hooks/customize_loaded_components/' ), '<code>customize_loaded_components</code>' ) ), '4.5.0' ); } unset( $this->panels[ $id ] ); }Introduced in 4.0.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-customize-manager.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.