Fix "dispvm: sanitize used memory info received from VM"
Fix "dispvm: sanitize used memory info received from VM"

There should be no -q option - we actually want the result.

Fixes qubesos/qubes-issues#994

marmarek/qubes-core-admin,marmarek/qubes-core-admin,QubesOS/qubes-core-admin,QubesOS/qubes-core-admin,woju/qubes-core-admin,woju/qubes-core-admin,woju/qubes-core-admin,QubesOS/qubes-core-admin,marmarek/qubes-core-admin,woju/qubes-core-admin