Drop opentracing build

The CI Dockerfile does not compile opentracing packages
anymore because it really does not belong to this
repository.

Change-Id: I81fef556e73d4abbe16eea3d457fc9dfdde3efd5
Signed-off-by: Roni Riska <roni.riska@nokia.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e44fb55..c1198c2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -42,7 +42,7 @@
 
 set (tracelibcpp_VERSION_MAJOR "0")
 set (tracelibcpp_VERSION_MINOR "0")
-set (tracelibcpp_VERSION_MICRO "4")
+set (tracelibcpp_VERSION_MICRO "5")
 set (tracelibcpp_VERSION_STRING
     "${tracelibcpp_VERSION_MAJOR}.${tracelibcpp_VERSION_MINOR}.${tracelibcpp_VERSION_MICRO}")