usb: chipidea: ci13xxx_imx: Remove redundant platform_set_drvdata()

Commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Marek Vasut <marex@denx.de>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/chipidea/ci13xxx_imx.c

@@ -251,8 +251,6 @@ static int ci13xxx_imx_remove(struct platform_device *pdev)
 
 	clk_disable_unprepare(data->clk);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }