[RegTests] Commented Out 3-Bit Adders in the VTR Nightly Tests

Commented out the tiny circuit (3-bit adder in `vtr_reg_nightly_test1/
arithmetic_tasks/figure_8/adder_003bits.v` and the same test for ODIN)
in both config and golden_results files.

It was a hotfix for PR verilog-to-routing#2785, which forgot to make these changes.

All failures, except for `vtr_reg_nightly_test7/titan_other_run_flat` as
mentioned in Issue verilog-to-routing#2786, have been fixed now.

Author: ueqri