removed unused function

cbrtocbz.py

@@ -14,16 +14,6 @@ def vprint(text, level=0):
         print(text)
 vprint.verbosity = 0
 
-def add_files(zip: zipfile.ZipFile, directory):
-    for dirpath, dirs, files in walk(directory):
-        for f in files:
-            path = join(dirpath, f)
-            vprint('writing ' + path, 2)
-            zip.write(path)
-        for d in dirs:
-            path = join(dirpath, d)
-            add_files(zip, path)
-
 def main(arguments):
     parser = argparse.ArgumentParser()
     parser.add_argument('-e', '--ext', type=str)