Remove the dead argh __main__ block in misc/example_slang_train_script.py (fleet-wide argh removal)

[thorwhalen]

Part of the fleet-wide argh removal tracked in i2mint/cw#29.

misc/example_slang_train_script.py:167-170 ends with:

if __name__ == '__main__':
    from argh import dispatch_command

    dispatch_command(compute_snips)

Verified unreachable. setup.cfg's install_requires is numpy, pandas, scikit-learn, matplotlib, dol, atypes, i2, config2py — no argh — there are no console_scripts, and the file sits in misc/, outside the packaged slang package, so it is not even shipped. Deleting the four lines is a no-op for every consumer and makes this repo's argh audit go quiet.

The change is prepared and tested locally, but I do not have push access to otosense/slang (the account has pull only), so I cannot open the PR. Filing this so the work is not lost. Anyone with write access can land it as a four-line deletion; no other file needs to change.

[thorwhalen]

Still open, still blocked, and now the last item in the fleet programme

The fleet-wide argh -> cw migration finished today. This repo is the only one left with an
argh line in it. Everything in the original description was re-verified against real source
this session and still holds; nothing here has gone stale.

The change, in full — so it does not have to live only in a local branch

--- a/misc/example_slang_train_script.py
+++ b/misc/example_slang_train_script.py
@@ -163,8 +163,3 @@ def compute_snips(
 #         for fv, tags in dacc.fv_tag_pairs(snipper.wf_to_chks, snipper.chk_to_fv)
 #     )
 # )
-
-if __name__ == '__main__':
-    from argh import dispatch_command
-
-    dispatch_command(compute_snips)

That is the whole thing. Anyone with write access can apply it in under a minute.

Why it is a no-op for every consumer

• setup.cfg's install_requires is numpy / pandas / scikit-learn / matplotlib / dol /
  atypes / i2 / config2py. argh is not declared — this block only ever worked if argh
  happened to be installed.
• There are no console scripts.
• misc/ has no __init__.py, so packages = find: does not ship the file. It is not in
  the published slang distribution at all.
• Confirmed: PyPI slang 0.1.12 has no Requires-Dist: argh. There is no licence
  exposure in the published artifact — this is purely about the source tree going quiet.

The blocker, re-confirmed today

$ gh api repos/otosense/slang --jq .permissions
{"admin":false,"maintain":false,"pull":true,"push":false,"triage":false}

Needs someone with write access on the otosense org. No agent can land it.

Context

Tracked as the last unfinished item of i2mint/cw#29 (the deletion sweep), which is being
held open solely for this. Programme write-up:
https://github.com/thorwhalen/priv/discussions/65