msm: ADSPRPC: Don't assign adsp_mem to modem

Remove VMID_MSS_MSA from destination list, as there is no modem
use case which uses adsp_mem

Change-Id: Iec9eabf4730b815c72f30f6e85368b6825af1a23
Acked-by: Himateja Reddy <hmreddy@qti.qualcomm.com>
Signed-off-by: Tharun Kumar Merugu <mtharu@codeaurora.org>