Breaking: #82680 - Removed option to generate PNGs limited to 64 colors

See forge#82680

Description

The option to generate PNGs with only 64 colors called $TYPO3_CONF_VARS[GFX][png_truecolor] has been removed.

The public PHP property GraphicalFunctions->png_truecolor has been removed.

Impact

Setting the option has no effect anymore, as resized PNG images are always truecolor.

Affected Installations

Any installation having this option disabled.

Migration

Accessing the Install Tool removes the option. If necessary, the option can be set via TypoScript GIFBUILDER reduceColors.