win_product_facts: Implement review suggestions (#48573)

lib/ansible/modules/windows/win_product_facts.ps1

@@ -5,15 +5,13 @@
 
 #AnsibleRequires -CSharpUtil Ansible.Basic
 
+# This modules does not accept any options
 $spec = @{
-    options = @{}
     supports_check_mode = $true
 }
 
 $module = [Ansible.Basic.AnsibleModule]::Create($args, $spec)
 
-$module.Result.changed = $false
-
 # First try to find the product key from ACPI
 try {
     $product_key = (Get-CimInstance -Class SoftwareLicensingService).OA3xOriginalProductKey