build: remove `librt` library dependency for Android compatibility

[MeowShe]

On Android, unlike Linux, there are no separate libpthread or librt libraries. That functionality is included directly in libc, which does not need to be explicitly linked against. (Native APIs | Android NDK)

Remove librt library dependency when building Node.js for Android, as it does not exist on Android.

Related to PR #51646, as part of a series of build fixes for Android.

[nodejs-github-bot]

Review requested:

• [ ] @nodejs/gyp
• [ ] @nodejs/v8-update

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/57038/

[nodejs-github-bot]

V8 CI: https://ci.nodejs.org/job/node-test-commit-v8-linux/nodes=benchmark-ubuntu2204-intel-64,v8test=v8test/5798/

[nodejs-github-bot]

V8 CI: https://ci.nodejs.org/job/node-test-commit-v8-linux/nodes=rhel8-s390x,v8test=v8test/5798/

[nodejs-github-bot]

V8 CI: https://ci.nodejs.org/job/node-test-commit-v8-linux/nodes=rhel8-ppc64le,v8test=v8test/5798/

[MeowShe]

Could we re-request CI again?

[lpinca]

Could we re-request CI again?

It is under security embargo.

[MeowShe]

Could we re-request CI again?

It is under security embargo.

Anything should I do for that?

[lpinca]

No, thank you.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/57092/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/57391/

[nodejs-github-bot]

Landed in 56ced192a1dee73188fa33b113162ebfc4ea1fd6