!260 svm: Delete unused ioctl command

Merge Pull Request from: @zhangjian210 
 
This patch delete unused function of SVM:

Now, the SVM_IOCTL_SET_RC,SVM_IOCTL_REMAP_PROC function has not been used by others, 
and SVM_IOCTL_REMAP_PROC interface has withdrawal of rights action, so we must delete
it's function.

Delete interface:
SVM_IOCTL_REMAP_PROC
SVM_IOCTL_SET_RC 
 
Link:https://gitee.com/openeuler/kernel/pulls/260

 
Reviewed-by: Zheng Zengkai <zhengzengkai@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>