Details page for parts: always go back to patterns

packages/edit-site/src/components/sidebar-navigation-screen-pattern/index.js

@@ -5,7 +5,6 @@ import { __experimentalUseNavigator as useNavigator } from '@wordpress/component
 import { useDispatch } from '@wordpress/data';
 import { __ } from '@wordpress/i18n';
 import { pencil } from '@wordpress/icons';
-import { getQueryArgs } from '@wordpress/url';
 
 /**
  * Internal dependencies
@@ -17,27 +16,18 @@ import usePatternDetails from './use-pattern-details';
 import { store as editSiteStore } from '../../store';
 import { unlock } from '../../lock-unlock';
 import TemplateActions from '../template-actions';
-import { TEMPLATE_PART_POST_TYPE } from '../../utils/constants';
 
 export default function SidebarNavigationScreenPattern() {
 	const navigator = useNavigator();
 	const {
 		params: { postType, postId },
 	} = navigator;
-	const { categoryType } = getQueryArgs( window.location.href );
 	const { setCanvasMode } = unlock( useDispatch( editSiteStore ) );
 
 	useInitEditedEntityFromURL();
 
 	const patternDetails = usePatternDetails( postType, postId );
-
-	// The absence of a category type in the query params for template parts
-	// indicates the user has arrived at the template part via the "manage all"
-	// page and the back button should return them to that list page.
-	const backPath =
-		! categoryType && postType === TEMPLATE_PART_POST_TYPE
-			? '/wp_template_part/all'
-			: '/patterns';
+	const backPath = '/patterns';
 
 	return (
 		<SidebarNavigationScreen