Revert "RPC Binder: terminate session for bad dec strong"

This reverts commit e0cb1808.

Reason for revert: b/417832354 - this error appears to happen
sometimes for binder objects that die, causing a flake in one
of our tests. This needs to be relanded with appropriate test or
libbinder fixes.

Bug: 416772676
Fixes: 417832354
Change-Id: Ib60a821ac397fa477e9e9eb35dc2edb7746423a3