Remove configs/Default.yml

[xylar]

This should not exist and the config options for omega should only come from componets/omega/configs/Default.yml

Checklist

• Linting
  • Pre-commit run locally
• Testing
  • Add a comment to the PR titled Testing with the following:
    • Which machines CTest unit tests
      have been run on and indicate that are all passing.
    • The Polaris omega_pr test suite
      has passed, using the Polaris e3sm_submodules/Omega baseline
    • Document machine(s), compiler(s), and the build path(s) used for -p for both the baseline (Polaris e3sm_submodules/Omega) and the PR build
    • Indicate "All tests passed" or document failing tests

Fixes #384

[xylar]

@alicebarthel, could you confirm that this file was added in #222 by mistake and should be removed?

[xylar]

Testing

To do this testing, I did a local rebase of this branch onto the Omega submodule in Polaris. This is because Polaris is not yet ready for the changes from #353, which was recently merged here.

CTest unit tests:

• Machine: pm-cpu
• Compiler: gnu
• Build type: Release
• Result: All tests passed
• Log: /pscratch/sd/x/xylar/polaris_1.0/pm-cpu/test_20260412/omega-pr-remove-extra-config2/build/ctests.log

Polaris omega_pr suite

• Baseline workdir: /pscratch/sd/x/xylar/polaris_1.0/pm-cpu/test_20260411/omega-pr-move-cpptrace
• Baseline build: /pscratch/sd/x/xylar/polaris_1.0/pm-cpu/test_20260411/omega-pr-move-cpptrace/build
• PR build: /pscratch/sd/x/xylar/polaris_1.0/pm-cpu/test_20260412/omega-pr-remove-extra-config2/build
• PR workdir: /pscratch/sd/x/xylar/polaris_1.0/pm-cpu/test_20260412/omega-pr-remove-extra-config2
• Machine: pm-cpu
• Compiler: gnu
• Build type: Release
• Log: /pscratch/sd/x/xylar/polaris_1.0/pm-cpu/test_20260412/omega-pr-remove-extra-config2/polaris_omega_pr.o51452170
• Result: All tests passed