Remove utils/install-PSWindowsUpdate.ps1

PowerShell's `Install-Module` command can be used to install this
module, therefore the install script is no longer needed. Thanks to
cluberti for notifying me about this.

close #54

utils/install-PSWindowsUpdate.ps1

@@ -1,25 +0,0 @@
-#   Description:
-# This script will setup the Windows Update Powershell module. With it you will
-# be able to download, install, uninstall and hide Windows updates using
-# Powershell. For a list of commands invoke
-# `PS> Get-Command -Module PSWindowsUpdate`.
-
-$ErrorActionPreference = "Stop"
-
-$download_uri = "https://gallery.technet.microsoft.com/scriptcenter/2d191bcd-3308-4edd-9de2-88dff796b0bc/file/41459/43/PSWindowsUpdate.zip"
-
-echo "Downloading PSWindowsUpdate zipfile"
-
-# TODO replace this with wget when it works again on a clean install
-$wc = new-object net.webclient
-$wc.DownloadFile($download_uri, "$PSHOME/Modules/PSWindowsUpdate.zip")
-
-echo "Extracting PSWindowsUpdate zipfile"
-Add-Type -AssemblyName "system.io.compression.filesystem"
-[io.compression.zipfile]::ExtractToDirectory("$PSHOME/Modules/PSWindowsUpdate.zip", "$PSHOME/Modules/")
-
-echo "Removing zipfile"
-rm "$PSHOME/Modules/PSWindowsUpdate.zip"
-
-echo "Import Module automatically when Powershell starts"
-echo "Import-Module PSWindowsUpdate" >> "$PSHOME/profile.ps1"