Important: #77411 - Removed extbase table column cache

See Issue #77411

Description

The extbase table column cache "extbase_typo3dbbackend_tablecolumns", which was used to store all database fields of all database tables, hass been removed.

The associated configuration variable $TYPO3_CONF_VARS[SYS][caching][cacheConfigurations][extbase_typo3dbbackend_tablecolumns] can safely be removed.