Revert "stm32cube: Introduce STM32Cube for STM32F2xx series" This reverts commit 00155448cf9bee26eef8a9fec23a9e7c9e92c90f. Change-Id: I08e929b81112f10ee0de6ddab1f28a0124722d33 Signed-off-by: Kumar Gala <kumar.gala@linaro.org>