Handling removing <original-package> tag

Fixes: 169414761
Test: Manual
Test: Add package A
Test: Verify package A exists
Test: Remove A, add package B w/ original-package A
Test: Verify package A exists, but codepath is to package B
Test: Replace package B w/o original-package A
Test: Verify package A removed and package B added
Change-Id: I198ca545f4fea3ae9d2328a845cbd9167eedf8da
Merged-In: I198ca545f4fea3ae9d2328a845cbd9167eedf8da