Remove the qsb layout margin and update the margin horizontal of it's container

New spec: https://screenshot.googleplex.com/FqnN1azFvCy.png
Screenshot: https://screenshot.googleplex.com/c0oDQSvQvyL.png

Test: Manually
Bug: 157402935
Change-Id: If14a41eabbfbaae198d7ded244175ff907012976
2 files changed