remove shapefile index so we don't have to adapt to https://github.com/mapnik/mapnik/commit/ee0395df7a95365b0608ef7d815abd54aff6fe4d
remove shapefile index so we don't have to adapt to https://github.com/mapnik/mapnik/commit/ee0395df7a95365b0608ef7d815abd54aff6fe4d

CartoDB/node-mapnik,CartoDB/node-mapnik,langateam/node-mapnik,mapnik/node-mapnik,tomhughes/node-mapnik,langateam/node-mapnik,mapnik/node-mapnik,tomhughes/node-mapnik,tomhughes/node-mapnik,CartoDB/node-mapnik,langateam/node-mapnik,CartoDB/node-mapnik,mapnik/node-mapnik,langateam/node-mapnik,tomhughes/node-mapnik,CartoDB/node-mapnik,mapnik/node-mapnik,langateam/node-mapnik,tomhughes/node-mapnik,mapnik/node-mapnik