Disable TraceurUiTests in presubmit

There have been some changes to the expected UI during TraceurUiTests.
This test should be temporarily removed from presubmit as we
investigate.

Test: Run presubmit and verify that TraceurUiTests did not run
Bug: 397511281
Change-Id: Ibe5bb473746d21d404758700894c37c83a7269ac