staging: pi433: remove unused rf69_set_rssi_timeout function

Function rf69_set_rssi_timeout is unused and should be removed.

Signed-off-by: Marcin Ciupak <marcin.s.ciupak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/pi433/rf69.c

@@ -598,13 +598,6 @@ int rf69_set_rx_start_timeout(struct spi_device *spi, u8 timeout)
 	return rf69_write_reg(spi, REG_RXTIMEOUT1, timeout);
 }
 
-int rf69_set_rssi_timeout(struct spi_device *spi, u8 timeout)
-{
-	/* no value check needed - u8 exactly matches register size */
-
-	return rf69_write_reg(spi, REG_RXTIMEOUT2, timeout);
-}
-
 int rf69_set_preamble_length(struct spi_device *spi, u16 preambleLength)
 {
 	int retval;

drivers/staging/pi433/rf69.h

@@ -51,7 +51,6 @@ bool rf69_get_flag(struct spi_device *spi, enum flag flag);
 int rf69_reset_flag(struct spi_device *spi, enum flag flag);
 int rf69_set_rssi_threshold(struct spi_device *spi, u8 threshold);
 int rf69_set_rx_start_timeout(struct spi_device *spi, u8 timeout);
-int rf69_set_rssi_timeout(struct spi_device *spi, u8 timeout);
 int rf69_set_preamble_length(struct spi_device *spi, u16 preambleLength);
 int rf69_enable_sync(struct spi_device *spi);
 int rf69_disable_sync(struct spi_device *spi);