Delete a comment in a VORBIS_COMMENT block at the given index.
\param object A pointer to an existing VORBIS_COMMENT object.
\param comment_num The index of the comment to delete.
\assert
\code object != NULL \endcode
\code object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT \endcode
\code object->data.vorbis_comment.num_comments > comment_num \endcode
\retval FLAC__bool
\c false if realloc() fails, else \c true.
Delete a comment in a VORBIS_COMMENT block at the given index.
\param object A pointer to an existing VORBIS_COMMENT object. \param comment_num The index of the comment to delete. \assert \code object != NULL \endcode \code object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT \endcode \code object->data.vorbis_comment.num_comments > comment_num \endcode \retval FLAC__bool \c false if realloc() fails, else \c true.