Remove unused import introduced with 8f706db5

Also cleanup wildcards in import statements.

Change-Id: I28c1435ae7482de1209aeefc755a230ef5b8c15d
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit.test/tst/org/eclipse/jgit/storage/file/FileBasedConfigTest.java

@@ -42,7 +42,8 @@
  */
 package org.eclipse.jgit.storage.file;
 
-import static org.junit.Assert.*;
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
 
 import java.io.ByteArrayOutputStream;
 import java.io.File;
@@ -54,7 +55,6 @@ import org.eclipse.jgit.util.FS;
 import org.eclipse.jgit.util.FileUtils;
 import org.eclipse.jgit.util.IO;
 import org.junit.After;
-import org.junit.Before;
 import org.junit.Test;
 
 public class FileBasedConfigTest {