remove alias in favor of cmdlet name

Cleanup-SystemTempFiles.ps1

@@ -36,7 +36,7 @@ If ( $CBSLogs ) {
 }
 
 # Remove all system temp files older than 7 days
-$OldTempFiles = Get-ChildItem -Path "${Env:SystemRoot}\TEMP" | Where { $_.LastWriteTime -lt ((Get-Date) - $TimeDelta) }
+$OldTempFiles = Get-ChildItem -Path "${Env:SystemRoot}\TEMP" | Where-Object { $_.LastWriteTime -lt ((Get-Date) - $TimeDelta) }
 If ( $OldTempFiles ) {
     Write-Output "Deleting all temp files not modified in ${OlderThan} day(s) from ${Env:SystemRoot}\TEMP"
     ForEach ( $OldTempFile in $OldTempFiles ) { Remove-Item $OldTempFile -Force -Recurse -ErrorAction SilentlyContinue }