target/microblaze: Remove `NB_MMU_MODES` define

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230306175230.7110-12-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/microblaze/cpu-param.h

@@ -28,6 +28,5 @@
 
 /* FIXME: MB uses variable pages down to 1K but linux only uses 4k.  */
 #define TARGET_PAGE_BITS 12
-#define NB_MMU_MODES 3
 
 #endif

target/microblaze/cpu.h

@@ -394,7 +394,7 @@ void mb_tcg_init(void);
 #define MMU_NOMMU_IDX   0
 #define MMU_KERNEL_IDX  1
 #define MMU_USER_IDX    2
-/* See NB_MMU_MODES further up the file.  */
+/* See NB_MMU_MODES in cpu-defs.h. */
 
 #include "exec/cpu-all.h"