Revert "notmuch 0.15.1"

This reverts commit 38de561cf2f86a92b7a8db3fb4b1130172f4e88d.

Formula/notmuch.rb

@@ -2,8 +2,8 @@ require 'formula'
 
 class Notmuch < Formula
   homepage 'http://notmuchmail.org'
-  url 'http://notmuchmail.org/releases/notmuch-0.15.1.tar.gz'
-  sha1 '09eb29b8a80c2c5bb3e9d91b4946cfd0dc93e608'
+  url 'http://notmuchmail.org/releases/notmuch-0.13.2.tar.gz'
+  sha1 '368b2451a64b1e3c574e688100700fc941ff2ea1'
 
   depends_on 'xapian'
   depends_on 'talloc'
@@ -17,7 +17,6 @@ class Notmuch < Formula
   def install
     # requires a newer emacs than OS X provides, so disable the bindings
     system "./configure", "--prefix=#{prefix}", "--without-emacs"
-    ENV.j1
     system "make install"
   end
 end