WIP: remove the old database abstraction layer

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

while here:
- remove: TextStream, SLog, TexTextStream

winixd/plugins/group/groups.cpp

@@ -5,7 +5,7 @@
  */
 
 /* 
- * Copyright (c) 2011-2021, Tomasz Sowa
+ * Copyright (c) 2011-2024, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -33,10 +33,10 @@
  */
 
 #include <algorithm>
-#include <limits>
 #include "groups.h"
 #include "core/log.h"
 
+
 namespace Winix
 {
 
@@ -84,7 +84,7 @@ void Groups::Reindex()
 				}
 				else
 				{
-					slog << logerror << "set: " << set_name << " already defined (skipping)" << logend;
+					//slog << logerror << "set: " << set_name << " already defined (skipping)" << logend;
 					//space.remove_child_space(seti);
 				}
 			}
@@ -117,17 +117,17 @@ void Groups::ReindexGroups(GroupIndex & group_index, const std::wstring & set_na
 					}
 					else
 					{
-						slog << logwarning << "set: " << set_name
-							 << " has a group with a duplicated value: "
-							 << *vali << " (skipping)" << logend;
+						// slog << logwarning << "set: " << set_name
+						// 	 << " has a group with a duplicated value: "
+						// 	 << *vali << " (skipping)" << logend;
 					}
 				}
 				else
 				{
 					log << log1 << "key: " << key << " was not found" << logend;
 
-					slog << logwarning << "set: " << set_name
-						 << " has a group without a value (skipping)" << logend;
+					// slog << logwarning << "set: " << set_name
+					// 	 << " has a group without a value (skipping)" << logend;
 				}
 			}