riscv: remove unused __cmpxchg_user() macro

This macro is defined but not used, remove it.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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Jisheng Zhang 2021-11-18 19:22:00 +08:00 • committed by Palmer Dabbelt
commit ddad0b88d5
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