Revert "Use dumpsys meminfo in order to find kernel start time since
/proc/uptime now requires elevated privileges." Requires privileges
starting in P.

This reverts commit a5c63c4e0d75f9c4313f0c5a7de58c84a0084b54.

Bug:69273331
Change-Id: Iaede6b2b05e3c00bafa1b28764966d90106c7c00
(cherry picked from commit 64c5c138be858d4baef00109169a0d5efada4c77)
(cherry picked from commit 24d916eb208c66d518621208663d95230a3d6c28)
1 file changed