Added hyperband support for hyperparameter tuning

requirements.txt

@@ -45,7 +45,6 @@ keras-preprocessing==1.1.2
 keras-tuner==1.0.2
 kerastuner-tensorboard-logger==0.2.3
 kiwisolver==1.3.1; python_version >= '3.6'
-llvmlite==0.34.0; python_version >= '3.6'
 markdown==3.3.3; python_version >= '3.6'
 markupsafe==1.1.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 matplotlib==3.1.3