STM32 uart: update after code review

Author: jeromecoutant

targets/TARGET_STM/TARGET_STM32F0/serial_device.c

@@ -33,7 +33,7 @@
 #include "serial_api_hal.h"
 
 #if defined (TARGET_STM32F031K6)
-    #define UART_NUM (1
+    #define UART_NUM (1)
 #elif defined (TARGET_STM32F030R8) || defined (TARGET_STM32F051R8) || defined (TARGET_STM32F042K6)
     #define UART_NUM (2)
 #elif defined (TARGET_STM32F070RB) || defined (TARGET_STM32F072RB)

targets/TARGET_STM/TARGET_STM32F4/serial_device.c

@@ -40,10 +40,8 @@
     #define UART_NUM (6)
 #elif defined (TARGET_STM32F429xI) || defined (TARGET_STM32F439xI) || defined (TARGET_STM32F437xG) || defined (TARGET_STM32F469xI)
     #define UART_NUM (8)
-#elif defined (TARGET_STM32F413xH)
-    #define UART_NUM (10)
 #else
-    #define UART_NUM (10) // max value
+    #define UART_NUM (10) // max value // TARGET_STM32F413xH
 #endif
 
 uint32_t serial_irq_ids[UART_NUM] = {0};

targets/TARGET_STM/serial_api_hal.h

@@ -37,8 +37,6 @@
 #include "mbed_debug.h"
 #include "mbed_error.h"
 
-// #include "cmsis.h"
-// #include "pinmap.h"
 #include "PeripheralPins.h"
 
 #ifdef __cplusplus