Remove test configuration in sonar-project.properties (#158)

This commit removes the sonar.tests configuration from the
sonar-project.properties file. The test configuration was unnecessary
and its removal simplifies the setup for SonarQube analysis.

Author: SmetDenis

sonar-project.properties

@@ -2,6 +2,4 @@ sonar.projectKey=JBZoo_Csv-Blueprint
 sonar.organization=jbzoo
 sonar.projectName=CSV Blueprint
 
-sonar.tests=tests
-
 sonar.php.coverage.reportPaths=build/coverage_xml/main.xml