Remove "All rights reserved" line from license headers.

As in the past, to avoid rewriting various autotests that contain
line-number information, an extra blank line has been inserted at the
end of the license text to ensure that this commit does not change the
total number of lines in the license header.

Change-Id: If39bd256b0fa85eba17ea30f8ab87ea27d758908
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>