Revert "Strings: hardcode "\n" as the line separator"

This reverts commit 7ddf37c01b68ff9d2de3a9dcb637d2b962b442ef.

Not needed anymore because of:
d4fa9f4ddc1c1f193b623c8da80384b4c510a1b4

Bug: 27265238
Bug: 28108158
Bug: 28174137
Change-Id: Icce1fd747459f07fbe5a4991897083315f78153d
1 file changed