hw/arm/bcm2836: Remove definitions generated by OBJECT_DECLARE_TYPE()

hw/arm/bcm2836: Remove definitions generated by OBJECT_DECLARE_TYPE()

The typedef and definitions are generated by the OBJECT_DECLARE_TYPE
macro in "hw/arm/bcm2836.h":

 20    #define TYPE_BCM283X "bcm283x"
 21    OBJECT_DECLARE_TYPE(BCM283XState, BCM283XClass, BCM283X)

The script ran in commit a489d1951c ("Use OBJECT_DECLARE_TYPE when
possible") missed them because they are declared in a different
file unit. Remove them.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230109140306.23161-10-philmd@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>