Revert timescaledb for pg14 and pg15 (#6056)

[vadim2404]

could not start the compute node: compute is in state "failed": db error: ERROR: could not access file "$libdir/timescaledb-2.10.1": No such file or directory Caused by: ERROR: could not access file "$libdir/timescaledb-2.10.1": No such file or directory

[github-actions]

2436 tests run: 2341 passed, 0 failed, 95 skipped (full report)

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Flaky tests (1)

Postgres 15

• test_competing_branchings_from_loading_race_to_ok_or_err: release

Code coverage (full report)

• functions: 54.5% (9282 of 17027 functions)
• lines: 82.0% (53947 of 65783 lines)

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_{The comment gets automatically updated with the latest test results
661fc41 at 2023-12-06T16:06:05.235Z :recycle:}