Revert "To use slapos, such patch is required. comes from bug_767190."

This reverts commit da697e8e.

This commit does not seems required.

src/zc/buildout/buildout.py

@@ -1460,22 +1460,6 @@ def _open(base, filename, seen, dl_options, override, downloaded):
                     filename)
         result[section] = options
 
-    # find and expose _profile_base_location_ and _profile_location_
-    for section, value in result.iteritems():
-        _profile_base_location_ = None
-        _profile_location_ = None
-        for k,v in value.iteritems():
-          if '${:_profile_base_location_}' in v:
-            _profile_base_location_ = base
-          if '${:_profile_location_}' in v:
-            _profile_location_ = filename
-          if _profile_base_location_ is not None and _profile_location_ is not None:
-            break
-        if _profile_base_location_ is not None:
-          value['_profile_base_location_'] = _profile_base_location_
-        if _profile_location_ is not None:
-          value['_profile_location_'] = _profile_location_
-
     result = _annotate(result, filename)
 
     if root_config_file and 'buildout' in result: