[Windows] Remove ndk-bundle (#5927)

* Remove ndk-bundle from windows

* Remove NDK-related variables

images/win/scripts/Tests/Android.Tests.ps1

@@ -96,11 +96,5 @@ Describe "Android SDK" {
         It "NDK <ndkPackage> is installed" -TestCases $ndkPackagesTestCases {
             "$installedPackages" | Should -Match "ndk;$ndkPackage"
         }
-
-        It "ndk-bundle points to the default NDK version" -TestCases @{ ndkDefaultVersion = $ndkDefaultFullVersion } {
-            $ndkLinkTarget = (Get-Item $env:ANDROID_NDK_HOME).Target
-            $ndkVersion = Split-Path -Path $ndkLinkTarget -Leaf
-            $ndkVersion | Should -BeExactly $ndkDefaultVersion
-        }
     }
 }