Add Remove-PnPTenantRestrictedSearchAllowedList cmdlet (#4399)

* Add example to get sharing link from list item

* new cmdlet to remove rss

---------

Co-authored-by: Gautam Sheth <gautamdsheth@outlook.com>

documentation/Remove-PnPTenantRestrictedSearchAllowedList.md

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+---
+Module Name: PnP.PowerShell
+schema: 2.0.0
+applicable: SharePoint Online
+online version: https://pnp.github.io/powershell/cmdlets/Remove-PnPTenantRestrictedSearchAllowedList.html
+external help file: PnP.PowerShell.dll-Help.xml
+title: Remove-PnPTenantRestrictedSearchAllowedList
+---
+
+# Remove-PnPTenantRestrictedSearchAllowedList
+
+## SYNOPSIS
+Removes site URLs from the allowed list when Restricted SharePoint Search is enabled. The URLs can be provided as a string array or read from a CSV file.
+
+## SYNTAX
+
+```powershell
+Remove-PnPTenantRestrictedSearchAllowedList [-SitesListFileUrl <String>] [-SitesList <String[]>] [-ContainsHeaders <SwitchParameter>] [-Connection <PnPConnection>] 
+```
+
+## DESCRIPTION
+
+Removes site URLs from the allowed list when Restricted SharePoint Search is enabled. The URLs can be provided directly as a string array or read from a CSV file. At present, a maximum of 100 sites can be added to the allowed list.
+
+## EXAMPLES
+
+### EXAMPLE 1
+```powershell
+Remove-PnPTenantRestrictedSearchAllowedList -SitesListFileUrl "C:\temp\sitelist.csv" -ContainsHeader
+```
+
+Removes site URLs from the allowed list from a CSV file. The first line, which is assumed to be a header, is skipped.
+
+### EXAMPLE 2
+```powershell
+Remove-PnPTenantRestrictedSearchAllowedList -SitesListFileUrl "C:\temp\sitelist.csv" 
+```
+
+Removes site URLs from the allowed list from a CSV file.
+
+### EXAMPLE 3
+```powershell
+Remove-PnPTenantRestrictedSearchAllowedList -SitesList @("https://contoso.sharepoint.com/sites/Company311","https://contoso.sharepoint.com/sites/contosoportal")
+```
+Removes the specified sites from the allowed list.
+
+## PARAMETERS
+
+### -Connection
+Optional connection to be used by the cmdlet. Retrieve the value for this parameter by either specifying -ReturnConnection on Connect-PnPOnline or by executing Get-PnPConnection.
+
+```yaml
+Type: PnPConnection
+Parameter Sets: (All)
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -SitesListFileUrl
+Specifies the path of the CSV file that contains a list of site URLs to be removed from the allowed list when the tenant is set to Restricted Tenant Search Mode.
+
+```yaml
+Type: String
+Parameter Sets: File
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -SitesList
+Specifies a collection of sites to remove from the allowed list.
+
+```yaml
+Type: String[]
+Parameter Sets: SiteList
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -Containsheader
+
+If specified, this switch skips the first line from the CSV file, which is assumed to be a header.
+
+```yaml
+Type: SwitchParamter
+Parameter Sets: File
+
+Required: False
+Position: Named
+Default value: False
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+## RELATED LINKS
+
+[How does Restricted SharePoint Search work?](https://learn.microsoft.com/sharepoint/restricted-sharepoint-search)
+[Microsoft 365 Patterns and Practices](https://aka.ms/m365pnp)

src/Commands/Admin/RemoveTenantRestrictedSearchAllowedList.cs

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+using Microsoft.Online.SharePoint.TenantAdministration;
+using Microsoft.SharePoint.Client;
+using PnP.PowerShell.Commands.Base;
+using System.Collections.Generic;
+using System.Management.Automation;
+using System.Linq;
+using System;
+
+namespace PnP.PowerShell.Commands.Admin
+{
+    [Cmdlet(VerbsCommon.Remove, "PnPTenantRestrictedSearchAllowedList", DefaultParameterSetName = ParameterSet_SiteList)]
+    public class RemoveTenantRestrictedSearchAllowedList : PnPAdminCmdlet
+    {
+        private const string ParameterSet_SiteList = "SiteList";
+        private const string ParameterSet_File = "File";
+
+        [Parameter(Mandatory = true, ParameterSetName = ParameterSet_SiteList)]
+        public string[] SitesList;
+
+        [Parameter(Mandatory = true, ParameterSetName = ParameterSet_File)]
+        public string SitesListFileUrl;
+
+        [Parameter(Mandatory = false, ParameterSetName = ParameterSet_File)]
+        public SwitchParameter ContainsHeader;
+
+        protected override void ExecuteCmdlet()
+        {
+            IList<string> _sitelist = null;
+            if (ParameterSetName == ParameterSet_File)
+            {
+                _sitelist = ReadFileContents();
+            }
+            else if (ParameterSetName == ParameterSet_SiteList)
+            {
+                _sitelist = SitesList;
+            }
+            else
+            {
+                throw new ArgumentException("Parameter set cannot be resolved using the specified named parameters.");
+            }
+
+            if (_sitelist == null)
+            {
+                throw new InvalidOperationException("SiteList cannot be null");
+            }
+
+            if(_sitelist.Count > 100)
+            {
+                WriteWarning($"The maximum number of sites that can be added to the allowed list is 100. You have specified {_sitelist.Count} sites. Will try to add them anyway.");
+            }
+
+            Tenant.RemoveSPORestrictedSearchAllowedList(_sitelist);
+            AdminContext.ExecuteQueryRetry();
+        }
+
+        private IList<string> ReadFileContents()
+        {
+            var lines = System.IO.File.ReadAllLines(SitesListFileUrl);
+            if (ContainsHeader)
+            {
+                lines = lines.Skip(1).ToArray();
+            }
+
+            foreach (var line in lines)
+            {
+                if (line.Contains(','))
+                {
+                    throw new InvalidOperationException("File should only contain one column and no commas");
+                }
+            }
+
+            return lines.ToList();
+        }
+    }
+}