OpenGL2: Merge bsp surface structs into a single struct, and more cleanup.

code/renderergl2/tr_model.c

@@ -562,8 +562,6 @@ static qboolean R_LoadMD3(model_t * mod, int lod, void *buffer, int bufferSize,
 			tri->indexes[2] = LittleLong(md3Tri->indexes[2]);
 		}
 
-		R_CalcSurfaceTriangleNeighbors(surf->numTriangles, surf->triangles);
-
 		// swap all the XyzNormals
 		surf->numVerts = md3Surf->numVerts;
 		surf->verts = v = ri.Hunk_Alloc(sizeof(*v) * (md3Surf->numVerts * md3Surf->numFrames), h_low);