spi Drop spi_init()

spi_init doesn't exist anywhere in the code.

Drop it.
Signed-off-by: NJagan Teki <jagan@amarulasolutions.com>

drivers/spi/cf_spi.c

@@ -383,10 +383,6 @@ static int coldfire_spi_probe(struct udevice *bus)
 	return 0;
 }
 
-void spi_init(void)
-{
-}
-
 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 static int coldfire_dspi_ofdata_to_platdata(struct udevice *bus)
 {

drivers/spi/kirkwood_spi.c

@@ -183,10 +183,6 @@ int spi_cs_is_valid(unsigned int bus, unsigned int cs)
 }
 #endif
 
-void spi_init(void)
-{
-}
-
 void spi_cs_activate(struct spi_slave *slave)
 {
 	_spi_cs_activate(spireg);