drivers: rpmsg: remove duplicate includes

These duplicate includes have been found with scripts/checkincludes.pl but
they have been removed manually to avoid removing false positives.

Signed-off-by: Pravin Shedge <pravin.shedge4linux@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/rpmsg/qcom_glink_smem.c

@@ -29,8 +29,6 @@
 #include <linux/workqueue.h>
 #include <linux/list.h>
 
-#include <linux/delay.h>
-#include <linux/rpmsg.h>
 #include <linux/rpmsg/qcom_glink.h>
 
 #include "qcom_glink_native.h"