php/WP_CLI/FileCache.php
public function remove( $key ) {
		if ( ! $this->enabled ) {
			return false;
		}

		$filename = $this->filename( $key );

		if ( file_exists( $filename ) ) {
			return unlink( $filename );
		}

		return false;
	}
public function remove( $key ) {
		if ( ! $this->enabled ) {
			return false;
		}

		$filename = $this->filename( $key );

		if ( file_exists( $filename ) ) {
			return unlink( $filename );
		}

		return false;
	}
public function remove ( $ key ) { if ( ! $ this -> enabled ) { return false ; } $ filename = $ this -> filename ( $ key ) ; if ( file_exists ( $ filename ) ) { return unlink ( $ filename ) ; } return false ; }
Remove file from cache

@param string $key cache key
@return bool
Remove file from cache