Move ml to opencv_contrib

[kaingwade]

Delete the accuracy test of ml, since it is moved to opencv_contrib from 5.0.

[kaingwade]

@fengyuentau Can you take a look?

[fengyuentau]

There is a failed test from videoio module, which I believe is not relavent.

# videoio
[ RUN      ] Media.audio/0, where GetParam() = ("test_audio.mp4", 1, 0.15, 64, 240, 320, 90, 132299, 30, 30, GSTREAMER)

(opencv_test_videoio:12825): GStreamer-WARNING **: 14:37:17.822: Name 'uridecodebin3' is not unique in bin 'pipeline8', not adding
[ WARN:[email protected]] global cap_gstreamer.cpp:1750 open OpenCV | GStreamer warning: frame count is estimated by duration and fps
[ WARN:[email protected]] global cap_gstreamer.cpp:1939 getProperty OpenCV | GStreamer: CAP_PROP_AUDIO_SHIFT_NSEC property is not supported
video0 timestamp: 0.0522449  audio0 timestamp: 0.0522449 (audio shift nanoseconds: 0 , seconds: 0)
frame=0:  audioFrameSize=1470  videoTimestamp=52.2449 ms
frame=1:  audioFrameSize=1470  videoTimestamp=78.3673 ms
frame=2:  audioFrameSize=1470  videoTimestamp=104.49 ms
frame=3:  audioFrameSize=1470  videoTimestamp=156.735 ms
frame=4:  audioFrameSize=1470  videoTimestamp=182.857 ms
frame...
frame=85:  audioFrameSize=1470  videoTimestamp=2873.47 ms
frame=86:  audioFrameSize=1470  videoTimestamp=2899.59 ms
frame=87:  audioFrameSize=1470  videoTimestamp=2951.84 ms
frame=88:  audioFrameSize=1470  videoTimestamp=2977.96 ms
frame=89:  audioFrameSize=0  videoTimestamp=2966.67 ms
Total audio samples=130829
/home/ci/opencv/modules/videoio/test/test_audio.cpp:46: Failure
Expected equality of these values:
  numberOfSamples
    Which is: 13[229](https://github.com/opencv/ci-gha-workflow/actions/runs/7974826258/job/21771615014?pr=151#step:31:230)9
  audioData[nCh].size()
    Which is: 130829
nCh=0
[  FAILED  ] Media.audio/0, where GetParam() = ("test_audio.mp4", 1, 0.15, 64, [240](https://github.com/opencv/ci-gha-workflow/actions/runs/7974826258/job/21771615014?pr=151#step:31:241), 320, 90, 132299, 30, 30, GSTREAMER) (143 ms)

• https://github.com/opencv/ci-gha-workflow/actions/runs/7974826258/job/21771615014?pr=151
• https://github.com/opencv/ci-gha-workflow/actions/runs/7974826261/job/21771615944?pr=151
• https://github.com/opencv/ci-gha-workflow/actions/runs/7974826256/job/21771615940?pr=151
• https://github.com/opencv/ci-gha-workflow/actions/runs/7974826254/job/21771615037?pr=151

Also a time-out error https://github.com/opencv/ci-gha-workflow/actions/runs/7974826252/job/21771615907?pr=151 which is networking problem.

---

@asmorkalov Please note that this PR needs to be merged before the source code removal so as not to break CI.

@kaingwade Please also submit another PR to add back these ml tests and merge it after the source code removal from main repo and before the merge of the PR in contrib which adds back the module.

[asmorkalov]

👍