ANDROID: Remove stale symbols from symbol lists

The following symbols no longer exist after reverting the out-of-tree
pKVM patches inherited from android14-6.1:

 - __pkvm_load_el2_module
 - __pkvm_register_el2_call
 - page_relinquish
 - pkvm_iommu_driver_init
 - pkvm_iommu_finalize
 - pkvm_iommu_register
 - pkvm_iommu_resume
 - pkvm_iommu_suspend
 - virtqueue_disable_dma_api_for_buffers

Remove references to these symbols from the symbol lists so that we can
get presubmit working again before re-introducing the symbols in a newer
version of the pKVM series.

Bug: 278750296
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: Iee0f95f63e115a3763a5b11db863df14eb44ab26