Update SPEEDYBEEF405V4 config (#945)

Bitbang should be disabled by default. Remove obsolete dashboard I2C define.

Author: ot0tot

configs/SPEEDYBEEF405V4/config.h

@@ -100,6 +100,7 @@
 #define BARO_I2C_INSTANCE I2CDEV_1
 #define DEFAULT_BLACKBOX_DEVICE BLACKBOX_DEVICE_SDCARD
 #define DEFAULT_DSHOT_BURST DSHOT_DMAR_OFF
+#define DEFAULT_DSHOT_BITBANG DSHOT_BITBANG_OFF
 #define DEFAULT_CURRENT_METER_SOURCE CURRENT_METER_ADC
 #define DEFAULT_VOLTAGE_METER_SOURCE VOLTAGE_METER_ADC
 #define DEFAULT_CURRENT_METER_SCALE 400
@@ -109,7 +110,6 @@
 #define SDCARD_SPI_INSTANCE SPI3
 #define SYSTEM_HSE_MHZ 8
 #define MAX7456_SPI_INSTANCE SPI2
-#define DASHBOARD_I2C_INSTANCE I2CDEV_1
 #define PINIO1_CONFIG 129
 #define PINIO1_BOX 0
 #define GYRO_1_SPI_INSTANCE SPI1