builtin: remove useless test for array

[lcheylus]

The suppressed test had a wrong format with redundant parentheses: test test_fixed_array_literal_eq in vlib/builtin/array_test.v

• Before this fix:

$ ./v test vlib/builtin/array_test.v
---- Testing... ----------------------------------------------------------------------------------------------------------------------------
vlib/builtin/array_test.v:948:9: notice: redundant parentheses are used
  946 |     // vfmt off
  947 |     assert ([1, 2, 3]!) == [1, 2, 3]!
  948 |     assert (([1, 2, 3]!)) == [1, 2, 3]!
      |            ~~~~~~~~~~~~~~
  949 |     // vfmt on
  950 | }
 OK       3.003 ms vlib/builtin/array_test.v
--------------------------------------------------------------------------------------------------------------------------------------------
Summary for all V _test.v files: 1 passed, 1 total. Elapsed time: 582 ms, on 1 job. Comptime: 576 ms. Runtime: 3 ms.

• After this fix:

$ ./v test vlib/builtin/array_test.v
---- Testing... ----------------------------------------------------------------------------------------------------------------------------
 OK       3.551 ms vlib/builtin/array_test.v
--------------------------------------------------------------------------------------------------------------------------------------------
Summary for all V _test.v files: 1 passed, 1 total. Elapsed time: 568 ms, on 1 job. Comptime: 561 ms. Runtime: 3 ms.