remove obsolete subprojects

(cherry picked from commit e219932b17bf2b9776141828b3212ed210ffa251)

go/pkg/auth/session.go

@@ -1,11 +0,0 @@
-package auth
-
-import "gopkg.in/mgo.v2/bson"
-
-// Session defines the data model for sessions with id,user name and admin status.
-type Session struct {
-	ID       bson.ObjectId `json:"_id" bson:"_id,omitempty"`
-	Username string        `json:"username" bson:"username,omitempty"`
-	IsAdmin  bool          `json:"is_admin" bson:"is_admin,omitempty"`
-	Model    string        `json:"model" bson:"model,omitempty"`
-}