Removed filterWhere option

The correct place to set this option that triggers injection of
PARTITION BY clause is includeHasMany() in juggler.js.

lib/sql.js

@@ -1069,10 +1069,6 @@ SQLConnector.prototype.all = function find(model, filter, options, cb) {
       return self.fromRow(model, obj);
     });
     if (filter && filter.include) {
-      if(filter.where) {
-        options.filterWhere = filter.where;
-      }
-
       self.getModelDefinition(model).model.include(
         objs, filter.include, options, cb);
     } else {