refactor(sentiment): remove unnecessary empty lines

Author: entelecheia

src/ekonlpy/sentiment/base.py

@@ -2,7 +2,6 @@
 This module contains base classes for dictionaries.
 """
 
-
 import abc
 
 from ekonlpy.utils.io import installpath

src/ekonlpy/sentiment/mpck.py

@@ -2,7 +2,6 @@
 This module contains classes for monetary policy sentiment classifier.
 """
 
-
 import os
 import pickle
 from collections import defaultdict, namedtuple

src/ekonlpy/sentiment/utils.py

@@ -1,6 +1,7 @@
 """
 This module contains methods to tokenize sentences.
 """
+
 import abc
 import os
 import re