Revert "Assert Parcel not in pool when used."

This reverts commit 880d6ce9.

This still causes ODEX size increase. I'll need to add this check to only some commonly used methods, rather than everywhere, or get deeper look from Art.

Reason for revert: b/381956910
Bug: 381155347
Fixes: 381956910

Change-Id: I10098f0b905673be9056a18c1594490322ed33c4