Update database connection string in DB.scala

Removed DB_CLOSE_DELAY parameter from connection string.

Author: hrj

src/main/scala/lc/database/DB.scala

@@ -4,7 +4,7 @@ import java.sql.{Connection, DriverManager, Statement}
 
 class DBConn() {
   val con: Connection =
-    DriverManager.getConnection("jdbc:h2:./data/H2/captcha3;MAX_COMPACT_TIME=8000;DB_CLOSE_ON_EXIT=FALSE;DB_CLOSE_DELAY=-1", "sa", "")
+    DriverManager.getConnection("jdbc:h2:./data/H2/captcha3;MAX_COMPACT_TIME=8000;DB_CLOSE_ON_EXIT=FALSE", "sa", "")
 
   def getStatement(): Statement = {
     con.createStatement()