Dont' uselessly rerun opentracing_shim tests. (#1086)
Dont' uselessly rerun opentracing_shim tests. (#1086)

Gradle should rerun automatically if any input/dependencies changed.

No other build.gradle uses cleanTest.
open-telemetry/opentelemetry-java,open-telemetry/opentelemetry-java,open-telemetry/opentelemetry-java