Its existence allows implicit readParcelable calls to invoke a Parcel
operation with mismatched read/write data sizes, allowing someone to
swap out the data on a reparcel.
Internal classes will use writeIntentInfoToParcel, so this is safe to
remove.
Bug: 191055353
Test: atest com.android.server.pm.test.parsing.parcelling
Change-Id: I44faa635faf8a77894a3dda8adf89c10064e53f1
(cherry picked from commit 75214cc510)