Improved quality based on Codacy report #151

https://app.codacy.com/gh/dpr1005/Semisupervised-learning-and-instance-selection-methods/commit?cid=631088962

Author: dpuenteramirez

semisupervised/DensityPeaks.py

@@ -14,8 +14,6 @@
 from sklearn.preprocessing import LabelEncoder
 from sklearn.semi_supervised import SelfTrainingClassifier
 from sklearn.svm import SVC
-from .utils import split
-from instance_selection import ENN
 
 
 class STDPNF:

semisupervised/TriTraining.py

@@ -10,7 +10,6 @@
 import numpy as np
 from sklearn.ensemble import RandomForestClassifier
 from sklearn.model_selection import train_test_split
-from sklearn.naive_bayes import GaussianNB
 from sklearn.neighbors import KNeighborsClassifier
 from sklearn.preprocessing import LabelEncoder
 from sklearn.tree import DecisionTreeClassifier