Delete sessions belonging to uninstalled packages.

+ Remove uninstalled packages from committers, leasees list.

Bug: 143559646
Test: atest ./hostsidetests/blobstore/src/com/android/cts/host/blob/DataCleanupTest.java
Change-Id: I54d2777d92615a8bc1887e3e31c9d2d76d68bece