Revert "Address the poor performance of the existing unique-name generation (#17944)"

This reverts commit 83202d8ad6.

# Conflicts:
#	src/Base/Tools.cpp
#	src/Base/Tools.h

src/App/Extension.cpp

@@ -181,10 +181,6 @@ void Extension::extensionGetPropertyMap(std::map<std::string, Property*>& Map) c
     extensionGetPropertyData().getPropertyMap(this, Map);
 }
 
-void Extension::extensionVisitProperties(std::function<void(Property*)> visitor) const
-{
-    extensionGetPropertyData().visitProperties(this, visitor);
-}
 void Extension::initExtensionSubclass(Base::Type& toInit,
                                       const char* ClassName,
                                       const char* ParentName,