Revert "Expand sharpening's ComputeLoadClassKind to cover cross-dex cases"

This reverts commit 32b8c8f33ad68982357c1fa3d0f132d06b070ab5.

Bug: 154012332
Bug: 214850438

Reason for revert: b/214850438

Change-Id: I479c0910ce5da593e170bc5e4f6fa10dfe5d67b2
9 files changed