clean up imports

Author: mspruc

wayang-api/wayang-api-python/src/test/java/org/apache/wayang/api/python/PythonApiTests.java

@@ -17,23 +17,15 @@
 
 package org.apache.wayang.api.python;
 
-import java.util.List;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
 import java.nio.file.Paths;
 
 import org.apache.wayang.api.python.executor.PythonProcessCaller;
-import org.apache.wayang.api.python.function.WrappedMapPartitionsDescriptor;
-import org.apache.wayang.api.python.function.WrappedPredicateDescriptor;
-
 import org.apache.wayang.core.api.Configuration;
-import org.apache.wayang.core.types.BasicDataUnitType;
 
 import org.junit.jupiter.api.Test;
 
-import com.google.protobuf.ByteString;
-
-import static org.junit.jupiter.api.Assertions.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertTrue;
-
 class PythonApiTests {
     @Test
     void processCallerSocketTest() {