Remove unused TypeVar import

Removed unused TypeVar import from linear_discriminant_analysis.py

Author: anandvenugopal-tech

machine_learning/linear_discriminant_analysis.py

@@ -47,7 +47,6 @@
 from math import log
 from os import name, system
 from random import gauss, seed
-from typing import TypeVar
 
 
 # Make a training dataset drawn from a gaussian distribution