Shubham Sandeep Rastogi 9ed8b272c3 Revert "Centralize the handling of completion for simple argument lists. (#82085)"
This reverts commit 21631494b068d9364b8dc8f18e59adee9131a0a5.

Reverted because of greendragon failure:

******************** TEST 'lldb-api :: functionalities/completion/TestCompletion.py' FAILED ********************
Script:
2024-02-19 18:19:59 -08:00
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