Remove section about building GeoTrellis locally
Remove section about building GeoTrellis locally

There is no need to build GeoTrellis locally anymore because intermediate versions are being published on Bintray, and this project's build file ensure that the GeoTrellis Bintray repository is added as a dependency resolver.
WikiWatershed/mmw-geoprocessing,WikiWatershed/mmw-geoprocessing