[WIP] Delete unused files

[vkucera]

There are quite a few files which appear to be unused (i.e. neither included nor compiled).
Please check whether any of them are used outside the repository or should be kept for other reasons.

[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

[alibuild]

Error while checking build/O2/fullCI_slc9 for 748fad9 at 2026-01-20 11:50:

## sw/BUILD/O2-latest/log
ninja: error: '/sw/SOURCES/O2/14973-slc9_x86-64/0/GPU/GPUTracking/Base/hip/GPUReconstructionHIPIncludesSystem.h', needed by 'GPU/GPUTracking/Base/hip/hipify/GPUReconstructionHIPIncludesSystem.h', missing and no known rule to make it

Full log here.

[iarsene]

Since the FOCAL part in O2 is under construction, I suggest to not remove anything please.

[vkucera]

Recovered

[lmassacr]

Hi @vkucera,

Some of the MID code proposed to be suppressed in this PR has been used for analyses on some tests bench. If there is no necessity to remove the code, I would prefer that we keep it. @dstocco can you confirm what needs to be kept for MID?

I am also checking for the MCH files with @aferrero2707 @pillot and other muon experts, please do not go ahead with removing code before our feedbacks.

Thanks,
Cheers,
Laure

[dstocco]

In the past we were indeed using the MID decoded-data-dump-workflow. However, looking now at this PR, I realise that the code is not in a CMakeLists.txt, so indeed it does not seem to be compiled.
It might be a leftover from some local development branch. This being the case, contrary to what I told to Laure, it is ok to delete the proposed file for MID.

[f3sch]

@vkucera please remove the changes to any ITS2&3 code. In the former case, I will open a PR soon where this is anyways done, in the latter its plainly wrong that the digit reader/writer is not built, will fix soon.

[vkucera]

@vkucera please remove the changes to any ITS2&3 code. In the former case, I will open a PR soon where this is anyways done, in the latter its plainly wrong that the digit reader/writer is not built, will fix soon.

Recovered