DSUEndtoEndTest: Remove deprecated option '--userdata_size' am: 4f82a54b82 am: 76a7774570 am: 1489f03bed am: 3ba5341836

Original change: https://android-review.googlesource.com/c/platform/system/gsid/+/2175682

Change-Id: Ic101aa2b1c65f121efd1113ecd0f25ec11f1aabd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>