[4.2] Removing obsolete PHP setting

[Hackwar]

The PHP setting zend.ze1_compatibility_mode has been removed in PHP 5.3. Time to remove it here as well...
https://php-legacy-docs.zend.com/manual/php4/en/ini.core

[jwaisner]

I have tested this item ✅ successfully on 8a900a5

No errors after applying PR in PHP 5.3.29

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[RickR2H]

I have tested this item ✅ successfully on 8a900a5

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[RickR2H]

RTC

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