Correctly handle packages marked as 'is_fake'

crew

@@ -334,6 +334,8 @@ def remove (pkgName)
     return
   end
 
+  #if the package is marked as 'is_fake', the file/directorylists doesn't exist
+  if File.file?("meta/#{pkgName}.filelist")
     Dir.chdir CREW_CONFIG_PATH do
 
       #remove all files installed by the package
@@ -357,6 +359,7 @@ def remove (pkgName)
       File.unlink "meta/#{pkgName}.directorylist"
 
     end
+  end
 
   #remove from installed packages
   @device[:installed_packages].each do |elem|