build: remove dead code

CHANGES.txt

@@ -178,8 +178,6 @@
  * Bugfix: Honour correctly passed md5sum to download method. [Łukasz Nowak]
  * Feature: Utility methods pipeCommand and failIfPathExists. [Łukasz Nowak]
  * Bugfix: Rename promisee to promise. [Łukasz Nowak]
- * Feature: Allow to define update_script and slapos_update_promise [Łukasz
-   Nowak]
  * Feature: Just warn in case of lack of promise. [Łukasz Nowak]
 
 0.1 (2011-08-26)

slapos/recipe/build/__init__.py

@@ -253,7 +253,6 @@ class Script:
     return True
 
   script = 'raise NotImplementedError'
-  update_script = None
 
   def __init__(self, buildout, name, options):
     self.cleanup_dir_list = []
@@ -341,26 +340,7 @@ class Script:
     return [self.options['location']]
 
   def update(self):
-    if self.update_script is None:
-      return None
-    try:
-      env = self.getEnvironment() # env is used in script exec'ed below
-      exec self.options['update_script']
-      try:
-        self._checkPromise('slapos_update_promise', self.options['location'])
-      except Exception:
-        self.logger.info('Keeping location %r during update' %
-          self.options['location'])
-        raise
-    finally:
-      for d in self.cleanup_dir_list:
-        if os.path.exists(d):
-          self.logger.debug('Cleanup directory %r' % d)
-          shutil.rmtree(d)
-      for f in self.cleanup_file_list:
-        if os.path.exists(f):
-          self.logger.debug('Cleanup file %r' % f)
-          os.unlink(f)
+    pass
 
   def applyPatchList(self, patch_string, patch_options=None, patch_binary=None, cwd=None):
     if patch_string is not None: