Revert "Merge pull request #20532 from timdream/keyboard-modify-layout" for most likely causing a really frequent gaia-ui test failure

This reverts commit a6c97a8924e9649052e7e33878ae4d28441975fd, reversing
changes made to 2d50292b3f4f8adce0680a9cd2df76f339f55ff3.