Clean up Vddio2 Independent I/Os supply setting

It was already present for STM32L4.
Test the register definition is enough.

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

libraries/SrcWrapper/src/stm32/PortNames.c

@@ -103,7 +103,7 @@ GPIO_TypeDef *set_GPIO_Port_Clock(uint32_t port_idx)
 #endif
 #if defined GPIOG_BASE
     case PortG:
-#if defined(STM32L4xx) && defined(PWR_CR2_IOSV)
+#if defined(PWR_CR2_IOSV)
       // Enable VDDIO2 supply for 14 I/Os (Port G[15:2])
       HAL_PWREx_EnableVddIO2();
 #endif

libraries/SrcWrapper/src/stm32/pinmap.c

@@ -98,12 +98,6 @@ void pin_function(PinName pin, int function)
   /* Enable GPIO clock */
   GPIO_TypeDef *gpio = set_GPIO_Port_Clock(port);
 
-#if defined (STM32L5xx)
-  /* Validate the VDDIO2 supply for electrical and logical isolation purpose. */
-  __HAL_RCC_PWR_CLK_ENABLE();
-  HAL_PWREx_EnableVddIO2();
-#endif /* STM32L5xx */
-
   hsem_lock(CFG_HW_GPIO_SEMID, HSEM_LOCK_DEFAULT_RETRY);
 
   /*  Set default speed to high.