Remove an unused import.

minixs/rixs.py

 import minixs as mx
 from minixs.emission import process_spectrum
 import numpy as np
-from socket import meth
+#from socket import meth
 from minixs import METHOD_ENTER_STR
 try:
     from itertools import izip as zip     # Python 2 way, For python 3 can use zip directly