Remove activeUser param from AC editor

This seems entirely unused.

Author: reosarevok

root/static/scripts/edit/components/ArtistCreditEditor.js

@@ -444,7 +444,6 @@ function createInitialNamesState(
 
 export function createInitialState(
   initialState: {
-    +activeUser: ActiveEditorT,
     +entity: ArtistCreditableT,
     +formName?: string,
     /*

root/static/scripts/edit/components/ArtistCreditEditor/types.js

@@ -29,7 +29,6 @@ export type ArtistCreditNameStateT = {
 };
 
 export type StateT = {
-  +activeUser: ActiveEditorT | null,
   +artistCreditString: string,
   +changeMatchingTrackArtists?: boolean,
   +editsPending?: boolean,

root/static/scripts/edit/components/forms.js

@@ -157,7 +157,6 @@ MB.initializeArtistCredit = function (form, initialArtistCredit) {
   });
 
   const initialState = createArtistCreditEditorState({
-    activeUser: window[GLOBAL_JS_NAMESPACE].$c.user,
     artistCredit: initialArtistCredit,
     entity: source,
     formName: form.name,

root/static/scripts/release-editor/bindingHandlers.js

@@ -105,7 +105,6 @@ ko.bindingHandlers.artistCreditEditor = {
     const artistCredit = entity.artistCredit();
 
     const initialState = createArtistCreditEditorState({
-      activeUser: window[GLOBAL_JS_NAMESPACE].$c.user,
       artistCredit,
       entity,
       id: entity.uniqueID,

root/static/scripts/tests/artist-credit-editor.js

@@ -9,22 +9,18 @@
 
 import test from 'tape';
 
-import activeSanitizedEditor
-  from '../../../utility/activeSanitizedEditor.mjs';
 import {
   createInitialState,
   reducer,
 } from '../edit/components/ArtistCreditEditor.js';
 
 import {
-  genericEditor,
   genericRecording,
 } from './utility/constants.js';
 
 test('MBS-13538: Removing all rows in the AC editor makes it disappear', function (t) {
   t.plan(2);
   const state = createInitialState({
-    activeUser: activeSanitizedEditor(genericEditor),
     entity: genericRecording,
     id: '',
   });