documentation updated

(cherry picked from commit d404180)

Author: gdy

README.md

@@ -62,9 +62,4 @@ Also following environment vars or JVM vars must be defined:
   - Password of Jenkins user used to run tests
 
 To run functional tests just execute JenkinsApiTest class as JUnit test or run `gradle test`. All jobs created during testing are deleted after automatically.
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+Note: tests are skipped by gradle if `build` task is present in tasks graph.