WIP: remove the old database abstraction layer

remove such classes:
- DbBase
- DbConn
- DbTextStream
- Db

while here:
- remove: TextStream, SLog, TexTextStream

winixd/templates/templates.cpp

@@ -5,7 +5,7 @@
  */
 
 /* 
- * Copyright (c) 2008-2022, Tomasz Sowa
+ * Copyright (c) 2008-2024, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -33,9 +33,7 @@
  */
  
 #include "templates.h"
-#include "core/misc.h"
 #include "core/plugin.h"
-#include "core/textstream.h"
 #include "functions/functions.h"
 
 namespace Winix
@@ -75,7 +73,6 @@ const HtmlTextStream      empty_stream;
 // en empty stack item for templates functions
 Ezc::Stack empty_stack;
 
-Db      * db = nullptr;
 Cur     * cur = nullptr;
 Config  * config = nullptr;
 System  * system = nullptr;
@@ -481,16 +478,6 @@ void Templates::CreateFunctions()
 	ezc_functions.Insert("server_mode_is",				server_mode_is);
 
 
-	/*
-		slog
-	*/
-	ezc_functions.Insert("slog_tab",                   slog_tab);
-	ezc_functions.Insert("slog_tab_is_info",           slog_tab_is_info);
-	ezc_functions.Insert("slog_tab_is_warning",        slog_tab_is_warning);
-	ezc_functions.Insert("slog_tab_is_error",          slog_tab_is_error);
-	ezc_functions.Insert("slog_tab_print",             slog_tab_print);
-
-
 	/*
 		stat
 	*/
@@ -1021,11 +1008,6 @@ void Templates::SetCur(Cur * pcur)
 
 
 
-void Templates::SetDb(Db * pdb)
-{
-	TemplatesFunctions::db = pdb;
-}
-
 
 void Templates::SetSystem(System * psystem)
 {