WP_Block_Styles_Registry::unregister( string $block_name, string $block_style_name )

Source

File: wp-includes/class-wp-block-styles-registry.php

public function unregister( $block_name, $block_style_name ) {
		if ( ! $this->is_registered( $block_name, $block_style_name ) ) {
			_doing_it_wrong(
				__METHOD__,
				/* translators: 1: Block name, 2: Block style name. */
				sprintf( __( 'Block "%1$s" does not contain a style named "%2$s".' ), $block_name, $block_style_name ),
				'5.3.0'
			);
			return false;
		}

		unset( $this->registered_block_styles[ $block_name ][ $block_style_name ] );

		return true;
	}