Revert "Serializer.cs added"

This reverts commit ab7e20b9b4b038fdbdf217f1eea699a811a9a133.

Conflicts:
	Carsharing/WindowsFormsApplication1.v11.suo
	Carsharing/WindowsFormsApplication1/bin/Debug/Carsharing.db
	Carsharing/WindowsFormsApplication1/bin/Debug/Carsharing.exe
	Carsharing/WindowsFormsApplication1/bin/Debug/Carsharing.pdb
	Carsharing/WindowsFormsApplication1/obj/Debug/Carsharing.exe