Documentation: Remove the unused "topology_updates" from kernel-parameters.txt

The "topology_updates" switch has been removed four years ago in commit
c30f931e ("powerpc/numa: remove ability to enable topology updates"),
so let's remove this from the documentation, too.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240617060848.38937-1-thuth@redhat.com

Documentation/admin-guide/kernel-parameters.txt

@@ -6582,12 +6582,6 @@
 			e.g. base its process migration decisions on it.
 			Default is on.
 
-	topology_updates= [KNL, PPC, NUMA]
-			Format: {off}
-			Specify if the kernel should ignore (off)
-			topology updates sent by the hypervisor to this
-			LPAR.
-
 	torture.disable_onoff_at_boot= [KNL]
 			Prevent the CPU-hotplug component of torturing
 			until after init has spawned.