remove pwsh version check

enough muscle memory has been built

profile.ps1

@@ -143,8 +143,3 @@ function watch {
         Start-Sleep -Seconds $n
     }
 }
-
-#check for old version
-if($PSVersionTable.PSVersion.Major -le 5){
-    Write-Host -ForegroundColor Red 'start pwsh instead of powershell'
-}