chore: remove unused registry arg from GetPrivilegeRequiredByUrl() (#44932)

this has never been used; introduced by 91071570

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: Charles Kerr <charles@charleskerr.com>

shell/browser/electron_browser_client.cc

@@ -265,9 +265,7 @@ bool AllowFileAccess(const std::string& extension_id,
              extension_id);
 }
 
-RenderProcessHostPrivilege GetPrivilegeRequiredByUrl(
-    const GURL& url,
-    extensions::ExtensionRegistry* registry) {
+RenderProcessHostPrivilege GetPrivilegeRequiredByUrl(const GURL& url) {
   // Default to a normal renderer cause it is lower privileged. This should only
   // occur if the URL on a site instance is either malformed, or uninitialized.
   // If it is malformed, then there is no need for better privileges anyways.
@@ -732,15 +730,12 @@ bool ElectronBrowserClient::IsSuitableHost(
     const GURL& site_url) {
 #if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
   auto* browser_context = process_host->GetBrowserContext();
-  extensions::ExtensionRegistry* registry =
-      extensions::ExtensionRegistry::Get(browser_context);
   extensions::ProcessMap* process_map =
       extensions::ProcessMap::Get(browser_context);
 
   // Otherwise, just make sure the process privilege matches the privilege
   // required by the site.
-  RenderProcessHostPrivilege privilege_required =
-      GetPrivilegeRequiredByUrl(site_url, registry);
+  const auto privilege_required = GetPrivilegeRequiredByUrl(site_url);
   return GetProcessPrivilege(process_host, process_map) == privilege_required;
 #else
   return content::ContentBrowserClient::IsSuitableHost(process_host, site_url);