removed pin_mode api call from pwmout_init_direct api

Author: AnishKumarHCL

targets/TARGET_STM/pwmout_api.c

@@ -197,7 +197,6 @@ static void _pwmout_init_direct(pwmout_t *obj, const PinMap *pinmap)
 #endif
     // Configure GPIO
     pin_function(pinmap->pin, pinmap->function);
-    pin_mode(pinmap->pin, PullNone);
 
     obj->pin = pinmap->pin;
     obj->period = 0;