riscv: remove unused __ARCH_HAVE_MMU define

The __ARCH_HAVE_MMU define is (and was) used nowhere in the tree and
also doesn't appear to be used by any libc.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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Tobias Klauser 2018-01-25 11:00:00 +01:00 • committed by Palmer Dabbelt
commit 0b5030c8c0
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