Remove unused and broken Make.bat script (#6654)

This commit removes the unused Make.bat file. This file was originally
added to provide a similar entrypoint to the makefile for windows users
that do not have automake installed. However, it hasn't really been
updated in some time and also has many issues in (like missing targets
and a hard dependency on conda). Since it clearly isn't used and hasn't
been updated this commit just removes the script. Using tox is a much
more viable solution for windows developers that do not have automake
as it handles everything this script was trying to do but is up to date
and works with any python env.

Co-authored-by: Luciano Bello <bel@zurich.ibm.com>

Make.bat

@@ -1,70 +0,0 @@
-:: Copyright 2017, IBM.
-::
-:: This source code is licensed under the Apache License, Version 2.0 found in
-:: the LICENSE.txt file in the root directory of this source tree.
-
-@ECHO OFF
-@SETLOCAL enabledelayedexpansion
-
-pushd %~dp0
-
-SET target=%~n1
-
-IF "%target%"=="env" GOTO :env
-IF "%target%"=="run" GOTO :run
-IF "%target%"=="lint" GOTO :lint
-IF "%target%"=="test" GOTO :test
-IF "%target%"=="clean" GOTO :clean
-:usage
-ECHO.
-ECHO.Usage:
-ECHO.    .\make env     Switches to a Python virtual environment
-ECHO.    .\make run     Runs Jupyter tutorials
-ECHO.    .\make lint    Runs Python source code analysis tool
-ECHO.    .\make test    Runs tests
-ECHO.    .\make prfile  Runs profiling tests
-ECHO.    .\make clean   Cleans previously generated documentation
-ECHO.
-GOTO :end
-
-:env
-SET QISKIT_ENV_FOUND=No
-@FOR /F %%i IN ('conda info --envs') DO (
-	IF "%%i"=="QISKitenv" SET QISKIT_ENV_FOUND=Yes
-)
-IF "%QISKIT_ENV_FOUND%"=="No" (
-	conda create -y -n QISKitenv python=3
-)
-IF errorlevel 9009 GOTO :error
-activate QISKitenv & pip install -r requirements.txt
-IF errorlevel 9009 GOTO :error
-GOTO :next
-
-:lint
-pylint qiskit test
-IF errorlevel 9009 GOTO :error
-GOTO :next
-
-:test
-IF errorlevel 9009 GOTO :error
-python -m unittest discover -v
-IF errorlevel 9009 GOTO :error
-GOTO :next
-
-:clean
-GOTO :next
-
-:error
-ECHO.
-ECHO.Something is missing in your Python installation.
-ECHO.Please make sure you have properly installed Anaconda3
-ECHO.(https://www.continuum.io/downloads), and that you are
-ECHO.running the "Anaconda Shell Command".
-ECHO.
-exit /b 1
-
-:next
-
-:end
-popd
-ENDLOCAL