Extra tables are added when I create a new Database
Someone added tables to the model database.


  When a CREATE DATABASE statement is issued, the first part of the
  database is created by copying in the contents of the model database.
  The rest of the new database is then filled with empty pages.
  
  If you modify the model database, all databases created afterward will
  inherit those changes. For example, you could set permissions or
  database options, or add objects such as tables, functions, or stored
  procedures.