test(image-generation): remove duplicate model map case (#129870)

Amp-Thread-ID: https://ampcode.com/threads/T-01a037b5-3918-749f-90bd-5c9ac1dced16

Co-authored-by: Amp <amp@ampcode.com>

src/image-generation/live-test-helpers.test.ts

@@ -4,7 +4,6 @@ import type { OpenClawConfig } from "../config/config.js";
 import {
   parseCaseFilter,
   parseImageProviderFilter,
-  parseProviderModelMap,
   redactLiveApiKey,
   resolveConfiguredLiveImageModels,
   resolveLiveImageAuthStore,
@@ -25,17 +24,6 @@ describe("image-generation live-test helpers", () => {
     );
   });
 
-  it("parses provider model overrides by provider id", () => {
-    expect(
-      parseProviderModelMap("openai/gpt-image-2, google/gemini-3.1-flash-image-preview, invalid"),
-    ).toEqual(
-      new Map([
-        ["openai", "openai/gpt-image-2"],
-        ["google", "google/gemini-3.1-flash-image-preview"],
-      ]),
-    );
-  });
-
   it("collects configured models from primary and fallbacks", () => {
     const cfg = {
       agents: {