forked from Mirrors/opensbi

Commit9dfe720579
("kendryte/k210: remove sysctl code") missed removing the file sysctl.c. Fix this here. Fixes:9dfe720579
("kendryte/k210: remove sysctl code") Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>