Remove hacks from CRM_Core_Menu for old unsupported versions #11781
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Overview
Removes unused variables and old unsupported hacks that were needed in ancient times.
Before
Clutter.
After
-18 lines of clutter.
Technical Notes
Currently CiviCRM 4.7 does not support directly upgrading from any version prior to 4.1. So all upgrade code for previous versions should be removed. I had already gotten rid of most of it, here are few stragglers.