Revert "arm: dts: bcm283x: Add minimal smbios information"

This reverts commit 33041972.

With the ability to generate this SMBIOS details autmotically the
small amount of details that this patch provided are generated
automatically so this is now obsolete so we can just drop it.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Acked-by: Matthias Brugger <mbrugger@suse.com>