ZDC: Delete unused files

[vkucera]

See #14973

[github-actions]

REQUEST FOR PRODUCTION RELEASES:
To request your PR to be included in production software, please add the corresponding labels called "async-" to your PR. Add the labels directly (if you have the permissions) or add a comment of the form (note that labels are separated by a ",")

+async-label <label1>, <label2>, !<label3> ...

This will add <label1> and <label2> and removes <label3>.

The following labels are available
async-2023-pbpb-apass4
async-2023-pp-apass4
async-2024-pp-apass1
async-2022-pp-apass7
async-2024-pp-cpass0
async-2024-PbPb-apass1
async-2024-ppRef-apass1
async-2024-PbPb-apass2
async-2023-PbPb-apass5

[vkucera]

@coppedis Can you please fix your write permissions in the repository? It's not possible to request your review otherwise.

[ktf]

@coppedis I have invited you as writer to the repository. Please accept the invitation and review this PR (or close it).

[alibuild]

Error while checking build/O2/fullCI_slc9 for 1f89d1f at 2026-02-12 03:00:

## sw/BUILD/O2-RTC-test-latest/log
[ERROR] Error Opening cagpu library for GPU Tracker (libO2GPUTrackingCUDA.so)
[ERROR] Error: Could not load GPUReconstruction for specified device: CUDA (2)

Full log here.

[vkucera]

@coppedis Can you please comment on why you closed the PR?

[vkucera]

@coppedis Ping

[coppedis]

I don't know why this PR is assigned to me as reviewer. I din't commit nor modify the files marked for deletion here. You should most probably ask to @cortesep . Honestly, I am really busy in this period and I can't help much on this.

[vkucera]

I don't know why this PR is assigned to me as reviewer. I din't commit nor modify the files marked for deletion here. You should most probably ask to @cortesep . Honestly, I am really busy in this period and I can't help much on this.

Currently, you are the only code owner of the ZDC code in this repository.

AliceO2/CODEOWNERS

Line 46 in 3e68768

/DataFormats/Detectors/ZDC @coppedis

AliceO2/CODEOWNERS

Line 78 in 3e68768

/Detectors/ZDC @coppedis

That means that you are the only person responsible for reviewing pull requests in the relevant directories. If this is a mistake, please contact the relevant people and ask them to fix it.

[github-actions]

REQUEST FOR PRODUCTION RELEASES:
To request your PR to be included in production software, please add the corresponding labels called "async-" to your PR. Add the labels directly (if you have the permissions) or add a comment of the form (note that labels are separated by a ",")

+async-label <label1>, <label2>, !<label3> ...

This will add <label1> and <label2> and removes <label3>.

The following labels are available
async-2023-pbpb-apass4
async-2023-pp-apass4
async-2024-pp-apass1
async-2022-pp-apass7
async-2024-pp-cpass0
async-2024-PbPb-apass1
async-2024-ppRef-apass1
async-2024-PbPb-apass2
async-2023-PbPb-apass5