accel/tcg: Remove cpu_set_cpustate_pointers

This function is now empty, so remove it.  In the case of
m68k and tricore, this empties the class instance initfn,
so remove those as well.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm/cpu.c

@@ -1215,7 +1215,6 @@ static void arm_cpu_initfn(Object *obj)
 {
     ARMCPU *cpu = ARM_CPU(obj);
 
-    cpu_set_cpustate_pointers(cpu);
     cpu->cp_regs = g_hash_table_new_full(g_direct_hash, g_direct_equal,
                                          NULL, g_free);