Revert "Release cblocks back to the free pool"

This reverts commit e41b029d8530d29eb18937662da8c5ea2939dda7.

Reason for revert: b/189985437

com.android.tradefed.targetprep.TargetSetupError[APK_INSTALLATION_FAILED|520001|DEPENDENCY_ISSUE]: Failed to install com.android.devicehealthchecks with ...

Change-Id: I06fe7d94f6dab474c74b093de8692f08d4031b62
7 files changed