lttng-tools: bump to version 2.1.1

* remove lttng-tools-Support-new-lttng-ust-error-code.patch (tarball
  fixed)
* remove lttng-tools-no-sync-file-range-in-uclibc.patch (merged
  upstream)

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>