db/attachment: remove useless delete

This dict key is deleted, and then promptly replaced. The deletion is
useless, the replacement does the same thing.

1 files changed, 4 insertions, 4 deletions

diff --git a/alot/db/attachment.py b/alot/db/attachment.py
index 94c0f7ad..a1b7bc04 100644
--- a/alot/db/attachment.py
+++ b/alot/db/attachment.py
@@ -86,8 +86,8 @@ class Attachment(object):
     def get_mime_representation(self):
         """returns mime part that constitutes this attachment"""
         part = deepcopy(self.part)
-        cd = self.part['Content-Disposition']
-        del part['Content-Disposition']
-        part['Content-Disposition'] = Header(cd, maxlinelen=78,
-                                             header_name='Content-Disposition')
+        part['Content-Disposition'] = Header(
+            self.part['Content-Disposition'],
+            maxlinelen=78,
+            header_name='Content-Disposition')
         return part