remove unused md5 hash alg

Author: emilsvennesson

lib/inputstreamhelper/utils.py

@@ -158,11 +158,9 @@ def _initialize_checksum(checksum, hash_alg):
     if not checksum:
         return None
 
-    from hashlib import md5, sha1
+    from hashlib import sha1
     if hash_alg == 'sha1':
         return sha1()
-    if hash_alg == 'md5':
-        return md5()
     log(4, 'Invalid hash algorithm specified: {}'.format(hash_alg))
     return None