Rip out getProcessAgeMs. A certain system crash has pointed to this at least 7.9M times, and it's not important. Bug: 173264759 Test: boot Change-Id: Ice3dddee6d62c443d3fd88e1082e5af7a58b4255 Merged-In: Ice3dddee6d62c443d3fd88e1082e5af7a58b4255