Remove unused import

Change-Id: I6f59539350ab28605e2e1fe1f30354cd68aa7740
Signed-off-by: Dani Megert <Daniel_Megert@ch.ibm.com>

org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/RepoCommand.java

@@ -52,7 +52,6 @@ import java.nio.channels.FileChannel;
 import java.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;