remove obsolete subprojects

(cherry picked from commit e219932b17bf2b9776141828b3212ed210ffa251)

go/pkg/library/publisher.go

@@ -1,12 +0,0 @@
-package library
-
-import (
-	"gopkg.in/mgo.v2/bson"
-)
-
-// Publisher defines the data model for library publishers with id and name.
-type Publisher struct {
-	ID    bson.ObjectId `json:"_id" bson:"_id,omitempty"`
-	Name  string        `json:"name" bson:"name"`
-	Model string        `json:"model" bson:"model"`
-}