Merge mRelinquished and mInPreRebootVerification (7/n)

The 2 flags serve the same purpose and can be merged.

Bug: 161121612
Test: atest CtsAtomicInstallTestCases
Test: atest CtsStagedInstallHostTestCases
Change-Id: I713741cffc1b7fd4c5b69fed1e1195db27abfbc1
1 file changed