Remove unused dataset, update requirements

Author: rushter

mla/datasets/base.py

@@ -1,20 +1,11 @@
 import os
 import numpy as np
-import pandas as pd
 
 
 def get_filename(name):
     return os.path.join(os.path.dirname(__file__), name)
 
 
-def load_boston():
-    df = pd.read_csv(get_filename('data/boston.csv'))
-
-    y = df['medv']
-    df.drop(['medv', 'id'], axis=1, inplace=type)
-    return df.values, y.values
-
-
 def load_mnist():
     def load(dataset="training", digits=np.arange(10)):
         import struct