arm64: zynqmp: Remove interrupt/reg-names for AMS

These two properties are not described in DT binding and also not used by
driver that's why remove them.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/b123c7e537dcf70802e828bbcd484a761a264186.1688992653.git.michal.simek@amd.com