test: Always test on risc-v now

upstream qemu has risc-v semihosting support, and that's packaged in
debian so we can always test the risc-v version too.

Signed-off-by: Keith Packard <keithp@keithp.com>

test/Makefile

@@ -18,11 +18,7 @@ include $(SNEK_ROOT)/snek.defs
 
 PYTHON3?=python3
 SNEK_NATIVE?=$(SNEK_PORTS)/posix/snek
-ifdef SNEK_RISCV_TEST
 SNEK_RISCV?=$(SNEK_PORTS)/qemu-riscv/snek-riscv
-else
-SNEK_RISCV=
-endif
 SNEK_ARM?=$(SNEK_PORTS)/qemu-arm/snek-arm
 
 LANGS=python3 $(SNEK_NATIVE) $(SNEK_ARM) $(SNEK_RISCV)