message: drop redundant ops
diff: */
  import { ShrakeRupleyContext, VdWLookup } from './common';
  -import { Vec3 } from '../../../../mol-math/linear-algebra';
  import { RuntimeContext } from '../../../../mol-task';
  // TODO
  @@ -27,9 +26,6 @@ export async function computeArea(runtime: RuntimeContext, ctx: ShrakeRupleyCont
  }
  }
  -const v3set = Vec3.set;
  -const aPos = Vec3();
  -
  function computeRange(ctx: ShrakeRupleyContext, begin: number, end: number) {
  const { structure, atomRadiusType, serialResidueIndex, area, spherePoints, scalingConstant, maxLookupRadius, probeSize } = ctx;
  const { lookup3d, serialMapping, unitIndexMap, units } = structure;
  @@ -44,7 +40,6 @@ function computeRange(ctx: ShrakeRupleyContext, begin: number, end: number) {
  const aX = aUnit.conformation.x(aElementIndex);
  const aY = aUnit.conformation.y(aElementIndex);
  const aZ = aUnit.conformation.z(aElementIndex);
  - v3set(aPos, aX, aY, aZ);
  // pre-filter by lookup3d (provides >10x speed-up compared to naive evaluation)
  const { count, units: lUnits, indices, squaredDistances } = lookup3d.find(aX, aY, aZ, maxLookupRadius);
  @@ -68,9 +63,9 @@ function computeRange(ctx: ShrakeRupleyContext, begin: number, end: number) {
  // while here: compute values for later lookup
  neighbors[neighbors.length] = [squaredDistances[iI],
  (squaredDistances[iI] + radius1 * radius1 - radius2 * radius2) / (2 * radius1),
  - bUnit.conformation.x(bElementIndex) - aPos[0],
  - bUnit.conformation.y(bElementIndex) - aPos[1],
  - bUnit.conformation.z(bElementIndex) - aPos[2]];
  + bUnit.conformation.x(bElementIndex) - aX,
  + bUnit.conformation.y(bElementIndex) - aY,
  + bUnit.conformation.z(bElementIndex) - aZ];
  }
  }
  