Clean up demote program write lock feature (backport #21949)

[mergify]

This is an automatic backport of pull request #21949 done by Mergify.
Cherry-pick of 6ff0be6 has failed:

On branch mergify/bp/v1.9/pr-21949
Your branch is up to date with 'origin/v1.9'.

You are currently cherry-picking commit 6ff0be6a8.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   cli-output/src/display.rs
	modified:   core/src/banking_stage.rs
	modified:   core/src/qos_service.rs
	modified:   ledger-tool/src/main.rs
	modified:   program-runtime/src/invoke_context.rs
	modified:   program-test/src/lib.rs
	modified:   rpc/src/transaction_status_service.rs
	modified:   runtime/src/bank.rs
	modified:   runtime/src/cost_model.rs
	modified:   sdk/benches/serialize_instructions.rs
	modified:   sdk/program/src/message/legacy.rs
	modified:   sdk/program/src/message/sanitized.rs
	modified:   sdk/program/src/message/versions/v0/loaded.rs
	modified:   sdk/program/src/sysvar/instructions.rs
	modified:   sdk/src/transaction/mod.rs
	modified:   sdk/src/transaction/sanitized.rs
	modified:   transaction-status/src/parse_accounts.rs

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   programs/bpf_loader/src/syscalls.rs
	both modified:   runtime/src/accounts.rs

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[solana-grimes]

😱 New commits were pushed while the automerge label was present.

[codecov]

Codecov Report

Merging #21969 (e4262e2) into v1.9 (0c5a2bc) will decrease coverage by 0.0%.
The diff coverage is 92.6%.

@@            Coverage Diff            @@
##             v1.9   #21969     +/-   ##
=========================================
- Coverage    81.2%    81.2%   -0.1%     
=========================================
  Files         515      515             
  Lines      143800   143751     -49     
=========================================
- Hits       116882   116840     -42     
+ Misses      26918    26911      -7     

[github-actions]

This PR has been automatically locked since there has not been any activity in past 14 days after it was merged.