Remove Item From Bundle

RemoveItemFromBundle.cs

public static void RemoveItemFromBundle(string bundleId, string itemId)
        {
            CoreServiceClient _CoreServiceClient = Utility.GetCoreServiceSettings();
            ReadOptions _readOption = new ReadOptions();
            //string bundleId = "tcm:5-1076-8192";
            VirtualFolderData bundle = (VirtualFolderData)_CoreServiceClient.Read(bundleId, _readOption);
            XmlDocument bundleConfiguration = new XmlDocument();
            bundleConfiguration.LoadXml(bundle.Configuration);

            XmlNameTable nameTable = new NameTable();
            nameTable = bundleConfiguration.NameTable;
            XmlNamespaceManager namespaceManager = new XmlNamespaceManager(nameTable);
            namespaceManager.AddNamespace("b", @"http://www.sdltridion.com/ContentManager/Bundle");
            namespaceManager.AddNamespace("xlink", @"http://www.w3.org/1999/xlink");

            XmlNode itemsElement = bundleConfiguration.SelectSingleNode("/b:Bundle/b:Items", namespaceManager);
            XmlNode itemElement= null;
            foreach (XmlNode node in itemsElement)
            {
                if(node.Attributes[@"xlink:href"] != null && node.Attributes[@"xlink:href"].Value == itemId)
                {
                    itemElement = node;
                }
            }
           // XmlNode itemElement = itemsElement.SelectSingleNode(string.Format("Item[@xlink:href='{0}']", itemId), namespaceManager);
            if (itemElement != null)
            {
                itemsElement.RemoveChild(itemElement);
            }
            bundle.Configuration = bundleConfiguration.InnerXml;
            _CoreServiceClient.Save(bundle, _readOption);
        }
    }

RemoveItemFromBundle.ps1

Function Remove-TridionItemFromBundle
 {
    [CmdletBinding()]
    Param (
            # Bundle ID
            [Parameter(Mandatory=$true)]
            [string]$BundleId,
		
	    # Item ID .
            [Parameter(Mandatory=$true)]
	    [string]$ItemID
        )

    Begin
    {
		$client = Get-TridionCoreServiceClient -Verbose:($PSBoundParameters['Verbose'] -eq $true);
		$readOptions = New-Object Tridion.ContentManager.CoreService.Client.ReadOptions;
    }
    
    Process
    { 
		$bundle = $client.Read($BundleId, $null);
		$item = $client.Read($ItemID, $null);
		$doc = New-Object System.Xml.XmlDocument;
		$doc.LoadXml($bundle.Configuration)

		$nodeList = $doc.GetElementsByTagName('Items')        
		FOREACH($node in $nodeList.ChildNodes){            
		    FOR($count=0; $count -lt $node.Attributes.Count; $count++)
		    {
					#need to put this condition as attribute names are different for component and page
			if($node.Attributes[$count].Name -like "*:href")
			{
			    $value = $node.Attributes[$count].Value;
			}
		    }
	    	    if($value -eq $item.Id)
		    {
			$nodeList.RemoveChild($node)
		    }
		}
        
		$bundle.Configuration = $doc.InnerXml;
		$client.Save($bundle, $readOptions);
    }

    End
    {
    	Close-TridionCoreServiceClient $client;
    }

 }