spi: davinci: Get rid of dangling variable

The previous commit left a variable unused, my bad.
Clean it up.

Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: David Lechner <david@lechnology.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 101a68e7 ("spi: davinci: Convert to use CS GPIO descriptors")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-davinci.c

@@ -423,7 +423,6 @@ static int davinci_spi_of_setup(struct spi_device *spi)
 static int davinci_spi_setup(struct spi_device *spi)
 {
 	struct davinci_spi *dspi;
-	struct spi_master *master = spi->master;
 	struct device_node *np = spi->dev.of_node;
 	bool internal_cs = true;