Remove obsolete .gitignore.
Remove obsolete .gitignore.

AndBicScadMedia/polymaps,RavishankarDuMCA10/mapsense.js,Andrey-Pavlov/polymaps,dillan/mapsense.js,gimlids/mapsense.js,simplegeo/polymaps,Cherchercher/polymaps,mapsense/mapsense.js,shkfnly/mapsense.js,mbostock/polymaps,makinacorpus/polymaps,cksachdev/mapsense.js,sfchronicle/mapsense.js,Andrey-Pavlov/polymaps,manueltimita/mapsense.js,Laurian/mapsense.js