removed unused imports

Author: Hakenadu

src/main/java/com/github/hakenadu/javalangchains/chains/data/retrieval/JdbcRetrievalChain.java

@@ -1,16 +1,24 @@
 package com.github.hakenadu.javalangchains.chains.data.retrieval;
 
-import com.github.hakenadu.javalangchains.util.PromptConstants;
-import org.apache.commons.lang3.tuple.Pair;
-
-import javax.swing.text.Document;
-import java.sql.*;
-import java.util.*;
-import java.util.function.BiFunction;
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.ResultSetMetaData;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 import java.util.function.Function;
 import java.util.function.Supplier;
 import java.util.stream.Stream;
 
+import org.apache.commons.lang3.tuple.Pair;
+
+import com.github.hakenadu.javalangchains.util.PromptConstants;
+
 public class JdbcRetrievalChain extends RetrievalChain {
  /**
  * supplier for lazy connection creation on chain invocation