test(sign): remove invalid $emit mock from Sign spec

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

src/tests/views/SignPDF/Sign.spec.ts

@@ -992,7 +992,6 @@ describe('Sign.vue - signWithTokenCode', () => {
 						NcRichText: true,
 					},
 					mocks: {
-						$emit: vi.fn(),
 						$watch: vi.fn(),
 					},
 				},