Remove pipenv from libClient test and benchmark

[mdonaka]

Summary

Remove pipenv

Purpose

Fix libClient test

Contents

• Remove pipenv from libClient Dockerfile

Testing Methods Performed

• make test t=LibClient p=medium
• CI

Details

The following changes were made Pipenv version 2022.10.9.

• When you create a pipenv project with a python version, the following two items are written to the Pipfile
  • python_version
  • python_full_version

ref: Pipenv release note

However, the following error occurs when trying to install the module as is.

python_full_version: 'python_version' must not be present with 'python_full_version'
python_version: 'python_full_version' must not be present with 'python_version'

wow... Really? I don't understand... So I remove Pipenv.