Removes empty line in CHANGES.md
Removes empty line in CHANGES.md

likangning93/cesium,CesiumGS/cesium,YonatanKra/cesium,likangning93/cesium,likangning93/cesium,CesiumGS/cesium,YonatanKra/cesium,CesiumGS/cesium,CesiumGS/cesium,YonatanKra/cesium,likangning93/cesium,AnalyticalGraphicsInc/cesium,AnalyticalGraphicsInc/cesium,CesiumGS/cesium,progsung/cesium,progsung/cesium,likangning93/cesium,YonatanKra/cesium