Revert "pin bump with better architecture (#15040)"

[Gasoonjia]

This reverts commit f32cdc3.

Summary

[PLEASE REMOVE] See CONTRIBUTING.md's Pull Requests for ExecuTorch PR guidelines.

[PLEASE REMOVE] If this PR closes an issue, please add a Fixes #<issue-id> line.

[PLEASE REMOVE] If this PR introduces a fix or feature that should be the upcoming release notes, please add a "Release notes: " label. For a list of available release notes labels, check out CONTRIBUTING.md's Pull Requests.

Test plan

[PLEASE REMOVE] How did you test this PR? Please write down any manual commands you used and note down tests that you have written if applicable.

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/15064

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❗ 1 Active SEVs

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• [ROCm][CI] Machines under the label linux.rocm.gpu.2 are undergoing maintenance.

❌ 5 New Failures, 37 Pending

As of commit 4bea836 with merge base a66ea20 ():

NEW FAILURES - The following jobs have failed:

• pull / test-qnn-wheel-packages-linux (3.10) / linux-job (gh)
  RuntimeError: Command docker exec -t 46eaf620d40d048cc79b848b0dbe0431cd28baa5e6d9c0d0db0982d596eb0991 /exec failed with exit code 1
• pull / test-qnn-wheel-packages-linux (3.11) / linux-job (gh)
  RuntimeError: Command docker exec -t b9029e246843d6b12ca1a37aa8f0f540b03fd18ccfbcbc3644fd3b94d35d7f0c /exec failed with exit code 1
• pull / test-qnn-wheel-packages-linux (3.12) / linux-job (gh)
  RuntimeError: Command docker exec -t ca89c016994a2f53fc634cf8ad9332d00ed933d6ff50ac11db55ef2c9f8f710d /exec failed with exit code 1
• trunk / test-arm-backend (test_pytest_ops_ethosu_fvp) / linux-job (gh)
  RuntimeError: Command docker exec -t 00718a8cf3fb23fdf15b604c24803d5163a6137b87c0b01446c12f2122d6cfe2 /exec failed with exit code 1
• trunk / unittest-release / linux / linux-job (gh)
  examples/models/test/test_export.py::ExportTest::test_ic3_export_to_executorch

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