style: remove unused code

The is some unused code in the code base that can be removed without
any loss of functionality.

closes #520

pgjdbc/src/main/java/org/postgresql/Driver.java

@@ -497,8 +497,6 @@ public boolean jdbcCompliant() {
     return false;
   }
 
-  static private String[] protocols = {"jdbc", "postgresql"};
-
   /**
    * Constructs a new DriverURL, splitting the specified URL into its component parts
    *

pgjdbc/src/main/java/org/postgresql/core/SetupQueryRunner.java

@@ -26,10 +26,8 @@ public class SetupQueryRunner {
   private static class SimpleResultHandler implements ResultHandler {
     private SQLException error;
     private List<byte[][]> tuples;
-    private final ProtocolConnection protoConnection;
 
-    SimpleResultHandler(ProtocolConnection protoConnection) {
-      this.protoConnection = protoConnection;
+    SimpleResultHandler() {
     }
 
     List<byte[][]> getResults() {
@@ -68,7 +66,7 @@ public static byte[][] run(ProtocolConnection protoConnection, String queryStrin
       boolean wantResults) throws SQLException {
     QueryExecutor executor = protoConnection.getQueryExecutor();
     Query query = executor.createSimpleQuery(queryString);
-    SimpleResultHandler handler = new SimpleResultHandler(protoConnection);
+    SimpleResultHandler handler = new SimpleResultHandler();
 
     int flags = QueryExecutor.QUERY_ONESHOT | QueryExecutor.QUERY_SUPPRESS_BEGIN;
     if (!wantResults) {

pgjdbc/src/main/java/org/postgresql/core/v3/QueryExecutorImpl.java

@@ -1784,7 +1784,6 @@ protected void processResults(ResultHandler handler, int flags) throws IOExcepti
 
     List<byte[][]> tuples = null;
 
-    int len;
     int c;
     boolean endQuery = false;
 
@@ -2015,7 +2014,6 @@ protected void processResults(ResultHandler handler, int flags) throws IOExcepti
 
         {
           ExecuteRequest executeData = pendingExecuteQueue.removeFirst();
-          SimpleQuery currentQuery = executeData.query;
           Portal currentPortal = executeData.portal;
           handler.handleCommandStatus("EMPTY", 0, 0);
           if (currentPortal != null) {

pgjdbc/src/main/java/org/postgresql/gss/GssAction.java

@@ -21,20 +21,18 @@ class GssAction implements PrivilegedAction<Exception> {
   private final PGStream pgStream;
   private final String host;
   private final String user;
-  private final String password;
   private final String kerberosServerName;
   private final Logger logger;
   private final boolean useSpnego;
   private final GSSCredential clientCredentials;
 
 
   public GssAction(PGStream pgStream, GSSCredential clientCredentials, String host, String user,
-      String password, String kerberosServerName, Logger logger, boolean useSpnego) {
+      String kerberosServerName, Logger logger, boolean useSpnego) {
     this.pgStream = pgStream;
     this.clientCredentials = clientCredentials;
     this.host = host;
     this.user = user;
-    this.password = password;
     this.kerberosServerName = kerberosServerName;
     this.logger = logger;
     this.useSpnego = useSpnego;

pgjdbc/src/main/java/org/postgresql/gss/MakeGSS.java

@@ -62,7 +62,7 @@ public static void authenticate(PGStream pgStream, String host, String user, Str
         sub = lc.getSubject();
       }
       PrivilegedAction<Exception> action = new GssAction(pgStream, gssCredential, host, user,
-          password, kerberosServerName, logger, useSpnego);
+          kerberosServerName, logger, useSpnego);
 
       result = Subject.doAs(sub, action);
     } catch (Exception e) {

pgjdbc/src/main/java/org/postgresql/jdbc/AbstractBlobClob.java

@@ -32,7 +32,6 @@ public abstract class AbstractBlobClob {
   protected BaseConnection conn;
 
   private LargeObject currentLo;
-  private long loPos;
   private boolean currentLoIsWriteable;
   private boolean support64bit;
 

pgjdbc/src/main/java/org/postgresql/jdbc/PgResultSet.java

@@ -98,8 +98,6 @@ public class PgResultSet implements ResultSet, org.postgresql.PGRefCursorResultS
   private int fetchdirection = ResultSet.FETCH_UNKNOWN;
   protected final BaseConnection connection; // the connection we belong to
   protected final BaseStatement statement; // the statement we belong to
-  private Statement realStatement;
-  // the real statement we belong to (when using forced binary prepared statement test hack)
   protected final Field fields[]; // Field metadata for this resultset.
   protected final Query originalQuery; // Query we originated from
 
@@ -3118,11 +3116,6 @@ void addRows(List<byte[][]> tuples) {
     rows.addAll(tuples);
   }
 
-
-  public void registerRealStatement(Statement realStatement) {
-    this.realStatement = realStatement;
-  }
-
   public void updateRef(int columnIndex, Ref x) throws SQLException {
     throw org.postgresql.Driver.notImplemented(this.getClass(), "updateRef(int,Ref)");
   }

pgjdbc/src/main/java/org/postgresql/jdbc/PgStatement.java

@@ -275,7 +275,6 @@ public java.sql.ResultSet executeQuery(String p_sql) throws SQLException {
       ps.setFetchSize(getFetchSize());
       ps.setFetchDirection(getFetchDirection());
       PgResultSet rs = (PgResultSet) ps.executeQuery();
-      rs.registerRealStatement(this);
 
       result = firstUnclosedResult = new ResultWrapper(rs);
       return rs;

pgjdbc/src/main/java/org/postgresql/sspi/SSPIClient.java

@@ -59,7 +59,6 @@ public SSPIClient(PGStream pgStream, String spnServiceClass, boolean enableNegot
     this.pgStream = pgStream;
 
     /* If blank or unspecified, SPN service class should be POSTGRES */
-    String realServiceClass = spnServiceClass;
     if (spnServiceClass != null && spnServiceClass.isEmpty()) {
       spnServiceClass = null;
     }

pgjdbc/src/main/java/org/postgresql/util/UnixCrypt.java

@@ -23,9 +23,6 @@ public class UnixCrypt extends Object {
   private UnixCrypt() {
   }
 
-  private static final char[] saltChars =
-      ("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789./".toCharArray());
-
   private static final int ITERATIONS = 16;
 
   private static final int con_salt[] = {