Removed _density from meta

  Density will now only be obtained by galaxy.dscan

director.cpp

@@ -1065,12 +1065,14 @@ void Director::SL_densityline(const std::string &line) {
     // what():  [json.exception.type_error.305] cannot use operator[] with a
     // numeric argument with object numeric argument with object
 
+    /*
     std::string sector_text = std::to_string(sector);
     galaxy.meta["_density"][sector_text]["density"] = density;
     galaxy.meta["_density"][sector_text]["warps"] = warps;
     galaxy.meta["_density"][sector_text]["navhaz"] = navhaz;
     galaxy.meta["_density"][sector_text]["anom"] = anom;
     galaxy.meta["_density"][sector_text]["known"] = known;
+    */
     // Add a check to see if density is greater than 500
     // Add datetime stamp
   }