DERRY — A 34-year-old man from the Irish Republic will appear in court on Wednesday to faces charges that he provided the getaway car used in the August 1998 Omagh bombing that killed 29 people and injured hundreds of others. It was the single greatest loss of life in Northern Ireland’s 30-year conflict. No one has been convicted in connection with the bombing. Last month, the Dublin Supreme Court overturned one of the suspects’ convictions, and he is now awaiting a retrial. Coming four months after the signing of the Good Friday Peace Agreement, the Omagh bombing was the work of the “Real” IRA, a dissident group that opposed the IRA ceasefire and its commitment to the peace agreement, which was meant to lay the foundations for a normalisation of Northern Ireland politics and society.