Remove old patch no longer needed in this upstream version

Description: patch header file due to compilation error

 Within pbuilder, compiler complains of "cannot bind packed field", so create a clone of the variables as auto.

Author: Shayan Doust <hello@shayandoust.me>

Last-Update: 2019-10-11

---

Index: megahit/src/sequence/kmer.h

===================================================================

--- megahit.orig/src/sequence/kmer.h	2019-10-21 11:34:23.623134886 +0100

+++ megahit/src/sequence/kmer.h	2019-10-21 11:34:51.959024968 +0100

@@ -113,7 +113,9 @@

     }

     for (unsigned i = 0; i + i < used_words; ++i) {

-      std::swap(data_[i], data_[used_words - 1 - i]);

+      Kmer<1, long unsigned int>::word_type a = data_[i];

+      Kmer<1, long unsigned int>::word_type b = data_[used_words - 1 - i];

+      std::swap(a, b);

     }

     if ((k % kCharsPerWord) != 0) {