title: Submodule project died, how to import the code?
body: <p>My project has a particular submodule that, since 2 days is no more live. The authors ha removed the repository at all from github.</p>
  
  <p>I need to know how to remove the submodule without loosing the code.</p>
  
  <p>Actually the submodule is located into</p>
  
  <p>project_root/external_modules/name_of_died_project</p>
  
  <p>I need to keep the code in the same position. I don'r want to pushit  to a separeted NEW repo.</p>
  
  <p>The code of the last commit is actually on my drive.
  It's not that I cannot push into a new repo.. i DONT'WANT to do it. 
  I simply want to keep the code and handle them as a simple standard subdirectory of the project, without change any path config</p>