i2c: designware: Remove needless variable from i2c_dw_init_slave()

Commit 43df43e6 ("i2c: designware: Don't set SCL timings and speed
mode when in slave mode") made variable comp_param1 needless in
i2c_dw_init_slave(). Remove it now.
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NJarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-designware-slave.c

@@ -51,7 +51,7 @@ static void i2c_dw_configure_fifo_slave(struct dw_i2c_dev *dev)
  */
 static int i2c_dw_init_slave(struct dw_i2c_dev *dev)
 {
-	u32 reg, comp_param1;
+	u32 reg;
 	int ret;
 
 	ret = i2c_dw_acquire_lock(dev);
@@ -72,8 +72,6 @@ static int i2c_dw_init_slave(struct dw_i2c_dev *dev)
 		return -ENODEV;
 	}
 
-	comp_param1 = dw_readl(dev, DW_IC_COMP_PARAM_1);
-
 	/* Disable the adapter. */
 	__i2c_dw_disable(dev);