changing from "pip-compile setup.py" to "pip-compile requirements.in"

[sushmanthreddy]

here in this we are changing from setup.py system to requirements.in file ,we have updated required libraries in requirements.in file by seeing import files and when we run pip-compile requirements.in

requirements.txt file is generated,according to files mentioned in requirements.in and it is used for better dependency management.so further we don't need the file setup.py so we removed it