[STM32F303ZE] Update objects definition

STM32F303ZE was introduced in parallel to the changes which consist in
having family wide definitions like device.h file and a common objects
definition.

This target is updated accordingly now to benefit of SPI definitions.

Author: LMESTM

targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303ZE/device.h

@@ -66,37 +66,17 @@ struct dac_s {
     uint32_t channel;
 };
 
-struct serial_s {
-    UARTName uart;
-    int index; // Used by irq
-    uint32_t baudrate;
-    uint32_t databits;
-    uint32_t stopbits;
-    uint32_t parity;
-    PinName pin_tx;
-    PinName pin_rx;
-};
-
 struct i2c_s {
     I2CName  i2c;
     uint32_t slave;
 };
 
-struct pwmout_s {
-    PWMName pwm;
-    PinName pin;
-    uint32_t prescaler;
-    uint32_t period;
-    uint32_t pulse;
-    uint32_t channel;
-    uint32_t inverted;
-};
-
 struct can_s {
     CANName can;
     int index;
 };
 
+#include "common_objects.h"
 #include "gpio_object.h"
 
 #ifdef __cplusplus