Remove one duplicated baseline for disable-layout-ng

This is same to the common baseline. Remove this one to make it inherit
from the common baseline.

Change-Id: Idadce697a98542fb01dee9606cc4a7f9266a98ac
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3575355
Commit-Queue: Weizhong Xia <weizhong@google.com>
Auto-Submit: Weizhong Xia <weizhong@google.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#989676}