Fixed copyright and an Eclipse warning.

com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/RChannel.java

@@ -28,7 +28,6 @@ import java.util.concurrent.*;
 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
 import com.oracle.truffle.r.runtime.conn.*;
 import com.oracle.truffle.r.runtime.data.*;
-import com.oracle.truffle.r.runtime.data.model.*;
 import com.oracle.truffle.r.runtime.env.*;
 
 /**

com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/library/fastr/TestChannels.java

 /*
- * Copyright (c) 20145, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it