Remove unnecessary define guard
The GD32VF103 family only has USB-OTG peripherals.
#define USE_SOF 0
#if defined (STM32F105x8) || defined (STM32F105xB) || defined (STM32F105xC) || \
- defined (STM32F107xB) || defined (STM32F107xC) || defined (GD32VF103)
+ defined (STM32F107xB) || defined (STM32F107xC)
#define STM32F1_SYNOPSYS
#endif
