[IMP] web: remove legacy_env_utils

This util was used in :
- owl_dialog_tests
- field_one2many_tests
- relational_fields_tests
- gantt_tests (enterprise)

These files are now converted to WOWL.

closes odoo/odoo#134684

Signed-off-by: Pierre Paridans (app) <app@odoo.com>

addons/web/static/tests/helpers/legacy_env_utils.js

@@ -1,44 +0,0 @@
-/** @odoo-module */
-
-import { registry } from "@web/core/registry";
-import { uiService } from "@web/core/ui/ui_service";
-import { patch } from "@web/core/utils/patch";
-import { makeLegacyDialogMappingService } from "@web/legacy/utils";
-import { hotkeyService } from "@web/core/hotkeys/hotkey_service";
-import core from "@web/legacy/js/services/core";
-import makeTestEnvironment from "@web/../tests/legacy/helpers/test_env";
-import { registerCleanup } from "./cleanup";
-import { makeTestEnv } from "./mock_env";
-
-const serviceRegistry = registry.category("services");
-
-export async function makeLegacyDialogMappingTestEnv() {
-    const coreBusListeners = [];
-    const unpatch = patch(core.bus, {
-        on(eventName, thisArg, callback) {
-            super.on(...arguments);
-            coreBusListeners.push({ eventName, callback });
-        },
-    });
-
-    const legacyEnv = makeTestEnvironment({ bus: core.bus });
-    serviceRegistry.add("ui", uiService);
-    serviceRegistry.add("hotkey", hotkeyService);
-    serviceRegistry.add("legacy_dialog_mapping", makeLegacyDialogMappingService(legacyEnv));
-
-    const env = await makeTestEnv();
-    legacyEnv.services.hotkey = env.services.hotkey;
-    legacyEnv.services.ui = env.services.ui;
-
-    registerCleanup(() => {
-        for (const listener of coreBusListeners) {
-            core.bus.off(listener.eventName, listener.callback);
-        }
-        unpatch();
-    });
-
-    return {
-        legacyEnv,
-        env,
-    };
-}