message: fix merge mistake.
diff: @@ -11,7 +11,7 @@ import { Angle, Arc3d, ClipPlane, ClipPlaneContainment, Constant, CurvePrimitive
  import { Cartographic, ColorByName, ColorDef, Frustum, GeoCoordStatus, GlobeMode } from "@bentley/imodeljs-common";
  import { IModelConnection } from "./IModelConnection";
  import { GraphicBuilder } from "./render/GraphicBuilder";
  -import { BingElevationProvider, WebMercatorTilingScheme } from "./tile/internal";
  +import { WebMercatorTilingScheme } from "./tile/internal";
  const scratchRange = Range3d.createNull();
  const scratchZeroPoint = Point3d.createZero();
  @@ -428,27 +428,3 @@ export async function calculateEcefToDbTransformAtLocation(originIn: Point3d, iM
  return Transform.createMatrixPickupPutdown(matrix, origin, ecefOrigin).inverse()!;
  }
  - private _geodeticToSeaLevel?: number;
  - private _projectCenterAltitude?: number;
  - public onEcefChanged(ecefLocation: EcefLocation| undefined) {
  - this._ecefToDb = ecefLocation?.getTransform().inverse();
  - this._geodeticToSeaLevel = 0;
  - this._projectCenterAltitude = 0;
  - const elevationProvider = new BingElevationProvider();
  -
  - this._geodeticToSeaLevel = await elevationProvider.getGeodeticToSeaLevelOffset(iModel.projectExtents.center, iModel);
  - this._projectCenterAltitude = await elevationProvider.getHeightValue(iModel.projectExtents.center, iModel, true);
  - public get geodeticToSeaLevel(): number {
  - if (undefined === this._geodeticToSeaLevel) {
  - assert (false);
  - return 0.0;
  - }
  - return this._geodeticToSeaLevel;
  - }
  - public get projectCenterAltitude(): number {
  - if (undefined === this._projectCenterAltitude) {
  - assert (false);
  - return 0.0;
  - }
  - return this._projectCenterAltitude;
  - }
  