Remove b/ from end2end expectations Bug: None Change-Id: Ibfa3ca48dc5084ffd548cc1ff331bf29592a817e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/7004585 Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>