Remove sys.vdso property

This is an experimental property on Q and doesn't need anymore.

Exempt-From-Owner-Approval: cherry-pick

Bug: 154885206
Test: N/A
Change-Id: I80415edc002345849b375e07fdf5783cf60c2446
Merged-In: I80415edc002345849b375e07fdf5783cf60c2446
(cherry picked from commit 7b59ae50e61c603a3162c8270ed6c4037731e5c2)
1 file changed