Remove module code, it's not necessary anymore

Author: danieljurek

eng/common/scripts/Set-VcpkgWriteModeCache.ps1

@@ -4,30 +4,6 @@ param(
   [string] $StorageContainerName = 'public-vcpkg-container'
 )
 
-. "$PSScriptRoot/Helpers/PSModule-Helpers.ps1"
-
-Write-Host "`$env:PSModulePath = $($env:PSModulePath)"
-
-# Work around double backslash
-if ($IsWindows) {
-  $hostedAgentModulePath = $env:SystemDrive + "\\Modules"
-  $moduleSeperator = ";"
-}
-else {
-  $hostedAgentModulePath = "/usr/share"
-  $moduleSeperator = ":"
-}
-$modulePaths = $env:PSModulePath -split $moduleSeperator
-$modulePaths = $modulePaths.Where({ !$_.StartsWith($hostedAgentModulePath) })
-$AzModuleCachePath = (Get-ChildItem "$hostedAgentModulePath/az_*" -Attributes Directory) -join $moduleSeperator
-if ($AzModuleCachePath -and $env:PSModulePath -notcontains $AzModuleCachePath) {
-  $modulePaths += $AzModuleCachePath
-}
-
-$env:PSModulePath = $modulePaths -join $moduleSeperator
-
-Install-ModuleIfNotInstalled "Az.Storage" "4.3.0" | Import-Module
-
 $ctx = New-AzStorageContext `
   -StorageAccountName $StorageAccountName `
   -UseConnectedAccount