arm64: smp: remove cpu and numa topology information when hotplugging out CPU

arm64: smp: remove cpu and numa topology information when hotplugging out CPU

We already repopulate the information on CPU hotplug-in, so we can safely
remove the CPU topology and NUMA cpumap information during CPU hotplug
out operation. This will help to provide the correct cpumask for
scheduler domains.

Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Tested-by: Ganapatrao Kulkarni <[email protected]>
Tested-by: Hanjun Guo <[email protected]>
Signed-off-by: Sudeep Holla <[email protected]>
Signed-off-by: Will Deacon <[email protected]>