[SPv175] Remove Pre-SPv175 code from unit tests

Bug: 771643
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
Change-Id: Iaf7c3bd1ae379ada68e25072ca43ece7f96cf899
Reviewed-on: https://chromium-review.googlesource.com/1081235
Reviewed-by: Tien-Ren Chen <trchen@chromium.org>
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#563467}
25 files changed