(declaratory judgment case in which oil and gas rights between subsequent owners were subject of dispute; issue stemmed from 1907 deed conveying surface only; trial court held precedent, Ramage v. South Penn Oil Company, 118 S.E. 162 (1923)required finding word "surface" ambiguous and extrinsic evidence should be used to determine meaning; on appeal, court held “surface” when used as a term of conveyance is not presumptively ambiguous and expressly overruled Ramage; 1907 deed unambiguous and to be enforced; result was that deed specifying "surface only" did not convey oil and gas interests).