test(cli): remove duplicate malformed JSON assertion

tests/boundary/filesystem/cliJsonInput.test.ts

@@ -160,12 +160,6 @@ describe("CLI JSON input", () => {
   }, 20_000);
 
   it("distinguishes malformed inline text from files and preserves bracket-prefixed paths", async () => {
-    expect(await parseCliJsonInput("[", "test-input")).toMatchObject({
-      ok: false,
-      error: {
-        details: { issues: [{ reason: "invalid_format", expected: "JSON" }] },
-      },
-    });
     expect(await parseCliJsonInput("[", "test-input")).toMatchObject({
       ok: false,
       error: {