stm32/f1/lisa-m/usb_hid: Fix compiler warning.
BUILD examples/stm32/f1/lisa-m/usb_hid usbhid.c: In function 'main': usbhid.c:316:10: warning: unused variable 'x'
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@ -313,7 +313,7 @@ int main(void)
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spi_set_nss_high(SPI2);
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spi_enable(SPI2);
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uint8_t x = accel_read(ADXL345_DEVID);
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(void)accel_read(ADXL345_DEVID);
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accel_write(ADXL345_POWER_CTL, ADXL345_POWER_CTL_MEASURE);
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accel_write(ADXL345_DATA_FORMAT, ADXL345_DATA_FORMAT_LALIGN);
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