Revert "STM32F7 updates for new driver version"

This reverts commit 52bfd0c.

Author: adbridge

targets/TARGET_STM/TARGET_STM32F7/common_objects.h

@@ -36,8 +36,6 @@
 #include "PinNames.h"
 #include "stm32f7xx_ll_usart.h"
 #include "stm32f7xx_ll_tim.h"
-#include "stm32f7xx_ll_adc.h"
-#include "stm32f7xx_ll_rtc.h"
 
 #ifdef __cplusplus
 extern "C" {

targets/TARGET_STM/mbed_rtx.h

@@ -116,14 +116,16 @@
 
 #elif (defined(TARGET_STM32F413ZH) ||\
        defined(TARGET_STM32F469NI) ||\
-       defined(TARGET_STM32F746xG) ||\
-       defined(TARGET_STM32F756xG) ||\
+       defined(TARGET_STM32F746NG) ||\
+       defined(TARGET_STM32F746ZG) ||\
+       defined(TARGET_STM32F756ZG) ||\
        defined(TARGET_STM32L496AG) ||\
        defined(TARGET_STM32L496ZG))
 #define INITIAL_SP              (0x20050000UL)
 
-#elif (defined(TARGET_STM32F767xI) ||\
-       defined(TARGET_STM32F769xI))
+#elif (defined(TARGET_STM32F767ZI) ||\
+       defined(TARGET_STM32F767VI) ||\
+       defined(TARGET_STM32F769NI))
 #define INITIAL_SP              (0x20080000UL)
 
 #elif defined(TARGET_STM32L4R5xI)