Remove (commented) code that cleans after compile

This removes code commented out/refactored in commit 2cf1654.

rubberin

@@ -70,10 +70,8 @@ def compile(infile, mode)
   params = ARGV.join(" ")
   err_file = infile.with_extname("err")
 
-  _ret = system "rubber --inplace #{mode_opt} #{params} #{infile} 2> #{err_file}"
+  system "rubber --inplace #{mode_opt} #{params} #{infile} 2> #{err_file}"
   File.open(err_file) { |file| puts file.read }
-  # Remove the output save file if compile was succesful.
-  # clean(infile) if ret
 end
 
 # Start the right viewer based on the mode.