remove leftover imports

Author: JasperGeurtz

src/test/java/bwapi/BWEMTest.java

@@ -4,14 +4,9 @@
 import bwem.BWMap;
 import org.junit.Test;
 
-import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.nio.ByteBuffer;
-import java.nio.file.Files;
-import java.nio.file.Paths;
 import java.util.HashMap;
 import java.util.Map;
-import java.util.zip.InflaterOutputStream;
 
 import static org.junit.Assert.assertEquals;