downloadunpacked: drop code that's not required anymore by slapos.recipe.cmmi

slapos/recipe/downloadunpacked.py

@@ -29,10 +29,8 @@ import os
 import subprocess
 import tarfile
 import tempfile
-from hashlib import md5
 from setuptools import archive_util
 from . import is_true, EnvironMixin, Shared
-from . import make_read_only_recursively # for slapos.recipe.cmmi
 
 class Recipe(EnvironMixin):
 
@@ -154,34 +152,3 @@ extraction_drivers = archive_util.extraction_drivers
 patched_extraction_drivers = extraction_drivers[:2] + (
     unpack_tarfile_patched,
   )
-
-class Signature: # for slapos.recipe.cmmi
-
-  def __init__(self, filename):
-    self.filename = filename
-    self.item_list = []
-
-  def update(self, key, value):
-    self.item_list.append(('%r: %r' % (key, value)).encode())
-
-  def hexdigest(self): # -> str
-    m = md5()
-    for item in self.item_list:
-      m.update(item)
-    return m.hexdigest()
-
-  def dumps(self):
-    return b'\n'.join(self.item_list)
-
-  def test(self, folder_path):
-    assert type(folder_path) is str, folder_path
-    digest = self.hexdigest()
-    if os.path.basename(folder_path) == digest:
-      target_path = os.path.join(folder_path, self.filename)
-      if os.path.exists(target_path) and open(target_path, 'rb').read() == self.dumps():
-        return True
-    return False
-
-  def save(self, folder_path):
-    with open(os.path.join(folder_path, self.filename), 'wb') as f:
-      f.write(self.dumps())