Update prepare-pages.ps1

Author: keveleigh

Pipelines/Scripts/prepare-pages.ps1

@@ -44,6 +44,10 @@ Get-ChildItem -Path (Join-Path $ProjectRoot "*" "package.json") | ForEach-Object
     if (-not $packageName) {
         return # this is not an MRTK package, so skip
     }
+    
+    if ($packageName -eq "org.mixedrealitytoolkit.data") {
+        return # this is a deprecated package, so skip
+    }
 
     $packageName = $packageName.Matches[0].Value
     $packageFriendlyName = (Select-String -Pattern "`"displayName`": `"(.+)`"" -Path $_ | Select-Object -First 1).Matches.Groups[1].Value