target: Remove nomips16 option.

There is no target with a CPU subtype of nomips16.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

include/target.mk

@@ -269,9 +269,7 @@ ifeq ($(DUMP),1)
       FEATURES += virtio
     endif
     ifneq ($(CONFIG_CPU_MIPS32_R2),)
-      ifneq ($(CPU_SUBTYPE),nomips16)
-        FEATURES += mips16
-      endif
+      FEATURES += mips16
     endif
     FEATURES += $(foreach v,6 7,$(if $(CONFIG_CPU_V$(v)),arm_v$(v)))