riscv: Cleanup unused functions

These functions haven't been used, so just remove them. The patch
has been tested with riscv.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
This commit is contained in:
Guo Ren 2021-05-30 04:53:27 +00:00 • committed by Palmer Dabbelt
commit efcec32fe8
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