spi: imx: Remove duplicate variable assignments

Some fields in struct spi_imx_data are assigned a different value twice
in a row, in spi_imx_setupxfer.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-imx.c

@@ -1106,8 +1106,6 @@ static int spi_imx_setupxfer(struct spi_device *spi,
 	if (spi_imx->devtype_data->dynamic_burst && !spi_imx->slave_mode) {
 		u32 mask;
 
-		spi_imx->dynamic_burst = 0;
-		spi_imx->remainder = 0;
 		spi_imx->read_u32  = 1;
 
 		mask = (1 << spi_imx->bits_per_word) - 1;