Remove nugets

build.cake

@@ -1,7 +1,6 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT license.
 
-#addin nuget:?package=Cake.FileHelpers
 #addin nuget:?package=Cake.AzureStorage
 #addin nuget:?package=Cake.Xcode
 #addin nuget:?package=Cake.Json&version=3.0.1

git-release.cake

@@ -1,6 +1,5 @@
 // NOTE: This cannot be run from a Mac.
 
-#addin nuget:?package=Cake.FileHelpers
 #addin nuget:?package=Cake.Git
 #tool "nuget:?package=gitreleasemanager"
 #load "utility.cake"

test-tools.cake

@@ -1,6 +1,5 @@
 #tool nuget:?package=XamarinComponent
 #addin nuget:?package=Cake.Xamarin
-#addin nuget:?package=Cake.FileHelpers
 #addin nuget:?package=Newtonsoft.Json
 #load "utility.cake"
 

version.cake

@@ -1,4 +1,3 @@
-#addin nuget:?package=Cake.FileHelpers
 #load "utility.cake"
 
 using System.Text.RegularExpressions;