Provide representation of deletion from BedPE breakpoints.

def build_vcf_deletion(x, genome_2bit):
    """Provide representation of deletion from BedPE breakpoints.
    """
    base1 = genome_2bit[x.chrom1].get(x.start1, x.start1 + 1).upper()
    id1 = "hydra{0}".format(x.name)
    return VcfLine(x.chrom1, x.start1, id1, base1, "<DEL>",
                   _vcf_single_end_info(x, "DEL", True))