revert env variable change

Author: shijiesheng

src/test/java/com/uber/cadence/testUtils/TestEnvironment.java

@@ -28,7 +28,7 @@ public final class TestEnvironment {
   private static final boolean DEBUGGER_TIMEOUTS = false;
 
   private static final boolean USE_DOCKER_SERVICE =
-      true || Boolean.parseBoolean(System.getenv("USE_DOCKER_SERVICE"));
+      Boolean.parseBoolean(System.getenv("USE_DOCKER_SERVICE"));
 
   private TestEnvironment() {}