_thread_add_messages: Remove unused variable.

I'm not sure how I let this warning go by unfixed for a while. Fix
it now.

1 files changed, 0 insertions, 1 deletions

diff --git a/lib/thread.cc b/lib/thread.cc
index f2618ace..cbce9c21 100644
--- a/lib/thread.cc
+++ b/lib/thread.cc
@@ -76,7 +76,6 @@ _thread_add_message (notmuch_thread_t *thread,
 {
     notmuch_tags_t *tags;
     const char *tag;
-    time_t date;
     InternetAddressList *list;
     InternetAddress *address;
     const char *from, *author;