Remove kq_imcx extension from public compute image

[lubennikovaav]

https://github.com/neondatabase/cloud/issues/13648

[github-actions]

3229 tests run: 3113 passed, 0 failed, 116 skipped (full report)

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Flaky tests (3)

Postgres 15

• test_gc_of_remote_layers: release
• test_subscriber_restart: release

Postgres 14

• test_storage_controller_smoke: debug

Code coverage* (full report)

• functions: 32.4% (6853 of 21131 functions)
• lines: 49.9% (53402 of 107072 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
d70b40f at 2024-06-21T18:31:16.007Z :recycle:}

[bayandin]

If someone has this extension installed (by a mistake, or maybe they just have all extensions installed), it might break their computes, isn't it?

[lubennikovaav]

If someone has this extension installed (by a mistake, or maybe they just have all extensions installed), it might break their computes, isn't it?

@bayandin

In the worst case, user will get an error like "file not found" when trying to access the extension files.
But this extension was useless without being in shared_preload_libraries anyways. And the customer, who used it already uninstalled it (see comments in the https://github.com/neondatabase/cloud/issues/13648)

If extension is in shared_preload_libraries, this error is FATAL and it will break the compute start.
But this is not the case.

I've checked pg_settings overrides and kq_imcx is not enabled for anyone
https://neonprod.grafana.net/d/fdl2zcisi4n40f/pg-settings-overrides-in-console-cplane?orgId=1