replace Get-ItemPropertyValue with Get-ItemProperty for PS 3.0 compatibility

Cleanup-SystemTempFiles.ps1

@@ -2,7 +2,7 @@
 
 # Function to enumerate all user profile folders
 Function Get-UserProfiles {
-    $ProfilePath = (Get-ItemPropertyValue -Path 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList' -Name ProfilesDirectory)
+    $ProfilePath = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList' -Name ProfilesDirectory).ProfilesDirectory
     $UserProfilePaths = @()
     ForEach ( $userProfile in (Get-ChildItem -Path $ProfilePath | Where-Object { $_.PSIsContainer }) ) {
         $UserProfilePaths += ,@($userProfile.FullName)