Improve performance of Package identification

Using -ListAvailable with Get-Command to ensure no module loading is
    attampeted while querying loaded commands.
    This improved performance when certain modules have not been
    loaded yet

base/Reload-MyScripts.ps1

@@ -4,7 +4,7 @@ function RemoveAlias {
     param([string]$Name)
     $local:a = $Name | Where-Object { $_ } | Get-Alias -ErrorAction SilentlyContinue
     if ( -not $a ) { return }
-    if ( Get-Command Remove-Alias -ErrorAction SilentlyContinue ) {
+    if ( Get-Command -ListImported Remove-Alias -ErrorAction SilentlyContinue ) {
         $a | Remove-Alias -Scope $MyAliasScope -ErrorAction SilentlyContinue
     }
     else {