big code cleanup to reduce number of compiler warnings

core/java/src/net/i2p/client/I2CPMessageProducer.java

@@ -30,7 +30,6 @@ import net.i2p.data.i2cp.ReportAbuseMessage;
 import net.i2p.data.i2cp.SendMessageMessage;
 import net.i2p.data.i2cp.SessionConfig;
 import net.i2p.util.Log;
-import net.i2p.util.RandomSource;
 
 /**
  * Produce the various messages the session needs to send to the router.

core/java/src/net/i2p/client/MessageState.java

@@ -1,9 +1,7 @@
 package net.i2p.client;
 
-import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.Iterator;
-import java.util.List;
 import java.util.Set;
 
 import net.i2p.data.Destination;

core/java/src/net/i2p/client/naming/HostsTxtNamingService.java

@@ -8,8 +8,6 @@
 package net.i2p.client.naming;
 
 import java.io.File;
-import java.io.FileInputStream;
-import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Properties;

core/java/src/net/i2p/crypto/AESEngine.java

@@ -9,10 +9,7 @@ package net.i2p.crypto;
  *
  */
 
-import java.io.IOException;
-
 import net.i2p.I2PAppContext;
-import net.i2p.data.DataFormatException;
 import net.i2p.data.DataHelper;
 import net.i2p.data.Hash;
 import net.i2p.data.SessionKey;

core/java/src/net/i2p/crypto/AESInputStream.java

@@ -14,9 +14,6 @@ import java.io.ByteArrayOutputStream;
 import java.io.FilterInputStream;
 import java.io.IOException;
 import java.io.InputStream;
-import java.util.ArrayList;
-import java.util.List;
-
 import net.i2p.I2PAppContext;
 import net.i2p.data.Base64;
 import net.i2p.data.DataHelper;

core/java/src/net/i2p/crypto/ElGamalAESEngine.java

@@ -9,8 +9,6 @@ package net.i2p.crypto;
  *
  */
 
-import java.io.ByteArrayInputStream;
-import java.io.IOException;
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.Iterator;

core/java/src/net/i2p/crypto/ElGamalEngine.java

@@ -29,7 +29,6 @@ package net.i2p.crypto;
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-import java.io.ByteArrayInputStream;
 import java.math.BigInteger;
 
 import net.i2p.I2PAppContext;

core/java/src/net/i2p/crypto/TransientSessionKeyManager.java

@@ -23,7 +23,6 @@ import net.i2p.data.DataHelper;
 import net.i2p.data.PublicKey;
 import net.i2p.data.SessionKey;
 import net.i2p.data.SessionTag;
-import net.i2p.util.Clock;
 import net.i2p.util.Log;
 
 /**

core/java/src/net/i2p/data/DataHelper.java

@@ -10,7 +10,6 @@ package net.i2p.data;
  */
 
 import java.io.BufferedReader;
-import java.io.BufferedInputStream;
 import java.io.BufferedWriter;
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;

core/java/src/net/i2p/data/DataStructure.java

@@ -12,7 +12,6 @@ package net.i2p.data;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.io.Serializable;
 
 /**
  * Defines the class as a standard object with particular bit representation,
@@ -20,7 +19,7 @@ import java.io.Serializable;
  * 
  * @author jrandom
  */
-public interface DataStructure extends Serializable {
+public interface DataStructure /* extends Serializable */ {
     /**
      * Load up the current object with data from the given stream.  Data loaded 
      * this way must match the I2P data structure specification.

core/java/src/net/i2p/data/i2cp/MessagePayloadMessage.java

@@ -9,7 +9,6 @@ package net.i2p.data.i2cp;
  *
  */
 
-import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;

core/java/src/net/i2p/data/i2cp/SendMessageMessage.java

@@ -9,7 +9,6 @@ package net.i2p.data.i2cp;
  *
  */
 
-import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;

core/java/src/net/i2p/util/Log.java

@@ -10,7 +10,6 @@ package net.i2p.util;
  */
 
 import net.i2p.I2PAppContext;
-import net.i2p.data.DataHelper;
 
 /**
  * Wrapper class for whatever logging system I2P uses.  This class should be