Op info test for triangular_solve .. unfold

[qihqi]

Fix the Op info test for triangular_solve .. unfold

1. Find the lines 328 to 332 of test_ops.py and remove
   triangular_solve .. unfold from skip_list
2. Run op_info test with pytest test/test_ops.py
3. Fix the failure.

Please refer to
this guide as guide to fix:

Also refer to these PRs:

• Add bitwise_left_shift, bitwise_right_shift #7343
• Add support for baddbmm, bincount #7312
• Add support for trig, binary, algebraic ops #7325

[ManfeiBai]

Thanks for the contribution, @cornmander!

please feel free to comment related PRs for op: "triu", "unbind", "unfold_copy", "unfold" in this issue too