chore: update sonar properties

Signed-off-by: Arjun Rajappa <Arjun.Rajappa@ibm.com>

Author: arjun-rajappa

sonar-project.properties

@@ -9,4 +9,3 @@ sonar.coverage.exclusions=bin/*,examples/*,extras/*
 sonar.links.homepage=https://github.com/instana/ruby-sensor/
 sonar.links.ci=https://circleci.com/gh/instana/ruby-sensor
 sonar.links.issue=https://github.com/instana/ruby-sensor/issues
-sonar.links.scm=https://github.com/instana/ruby-sensor/