Update godep in vendor

vendor/github.com/tools/godep/godepfile.go

@@ -25,10 +25,6 @@ type Godeps struct {
 	isOldFile    bool
 }
 
-func createGodepsFile() (*os.File, error) {
-	return os.Create(godepsFile)
-}
-
 func loadGodepsFile(path string) (Godeps, error) {
 	var g Godeps
 	f, err := os.Open(path)
@@ -201,9 +197,7 @@ func (g *Godeps) addOrUpdateDeps(deps []Dependency) {
 			missing = append(missing, d)
 		}
 	}
-	for _, d := range missing {
-		g.Deps = append(g.Deps, d)
-	}
+	g.Deps = append(g.Deps, missing...)
 }
 
 func (g *Godeps) removeDeps(deps []Dependency) {