target/arm: Prune a15 features from max

There is no need to re-set these 3 features already
implied by the call to aarch64_a15_initfn.
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 20180629001538.11415-5-richard.henderson@linaro.org
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

target/arm/cpu.c

@@ -1803,9 +1803,6 @@ static void arm_max_initfn(Object *obj)
          * since we don't correctly set the ID registers to advertise them,
          */
         set_feature(&cpu->env, ARM_FEATURE_V8);
-        set_feature(&cpu->env, ARM_FEATURE_VFP4);
-        set_feature(&cpu->env, ARM_FEATURE_NEON);
-        set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
         set_feature(&cpu->env, ARM_FEATURE_V8_AES);
         set_feature(&cpu->env, ARM_FEATURE_V8_SHA1);
         set_feature(&cpu->env, ARM_FEATURE_V8_SHA256);