Removing unnecessary source and target versions from build.properties
diff --git a/build.properties b/build.properties
index 30ee66d..363f966 100644
--- a/build.properties
+++ b/build.properties
@@ -6,8 +6,6 @@
 project.key=OTS
 ivy.cache.dir=${basedir}/../ivy-cache
 integration.repo.dir=${basedir}/../integration-repo
-source.version=1.6
-target.version=1.6
 findbugs.enforce=true
 clover.enforce=true
 clover.coverage=100%