Remove extra new line from status updates.

When status updates are added to the stream items, they need to be
converted to HTML. In the process, an extra new line was added at the
end of each of them.

This commit removed this trailing new line, so that the updates are
shown correctly in the UI.

Bug: 5193689
Change-Id: I223070eeb1439a8ffacbfb61d6e86355b14c68db
2 files changed