clk: rs9: Drop unused pin_xin field

The pin_xin field in struct rs9_driver_data is unused, drop it.

Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20221216210922.592926-1-marex@denx.de
Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: Marek Vasut

drivers/clk/clk-renesas-pcie.c

@@ -60,7 +60,6 @@ struct rs9_driver_data {
 	struct i2c_client	*client;
 	struct regmap		*regmap;
 	const struct rs9_chip_info *chip_info;
-	struct clk		*pin_xin;
 	struct clk_hw		*clk_dif[2];
 	u8			pll_amplitude;
 	u8			pll_ssc;