Revert "LCD_KCAL Colour Control for m8"

This reverts commit 6cb07e5e8c87b86aa8d7d8d7b4ffa92dbb2cb178.
Revert "Enable Colour Control (LCD_KCAL)"

This reverts commit 7175372ccb5e65bf08a21dbcb2f8a885f0b533d8.