diff --git a/Makefile b/Makefile
deleted file mode 100644
index c0aa685ed47ac..0000000000000
--- a/Makefile
+++ /dev/null
@@ -1,30 +0,0 @@
-.PHONY : develop build clean clean_pyc doc lint-diff black test-scripts
-
-all: develop
-
-clean:
-	-python setup.py clean
-
-clean_pyc:
-	-find . -name '*.py[co]' -exec rm {} \;
-
-build: clean_pyc
-	python setup.py build_ext
-
-lint-diff:
-	git diff upstream/main --name-only -- "*.py" | xargs flake8
-
-black:
-	black .
-
-develop: build
-	python -m pip install --no-build-isolation -e .
-
-doc:
-	-rm -rf doc/build doc/source/generated
-	cd doc; \
-	python make.py clean; \
-	python make.py html
-
-test-scripts:
-	pytest scripts
diff --git a/doc/source/development/contributing_codebase.rst b/doc/source/development/contributing_codebase.rst
index d0e918196beae..c60edd0d1c2b9 100644
--- a/doc/source/development/contributing_codebase.rst
+++ b/doc/source/development/contributing_codebase.rst
@@ -796,16 +796,16 @@ need to install ``pytest-xdist`` via::
 
     pip install pytest-xdist
 
-Two scripts are provided to assist with this.  These scripts distribute
-testing across 4 threads.
+The ``-n`` flag then can be specified when running ``pytest`` to parallelize a test run
+across the number of specified cores or ``auto`` to utilize all the available cores on your machine.
 
-On Unix variants, one can type::
+.. code-block:: bash
 
-    test_fast.sh
+   # Utilize 4 cores
+   pytest -n 4 pandas
 
-On Windows, one can type::
-
-    test_fast.bat
+   # Utilizes all available cores
+   pytest -n auto pandas
 
 This can significantly reduce the time it takes to locally run tests before
 submitting a pull request.
diff --git a/test_fast.bat b/test_fast.bat
deleted file mode 100644
index 85ce305ab2d64..0000000000000
--- a/test_fast.bat
+++ /dev/null
@@ -1,3 +0,0 @@
-:: test on windows
-set PYTHONHASHSEED=314159265
-pytest --skip-slow --skip-network --skip-db -m "not single_cpu" -n 4 -r sXX pandas
diff --git a/test_fast.sh b/test_fast.sh
deleted file mode 100755
index 0120c712e3df8..0000000000000
--- a/test_fast.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/bin/bash
-
-# Workaround for pytest-xdist flaky collection order
-# https://github.com/pytest-dev/pytest/issues/920
-# https://github.com/pytest-dev/pytest/issues/1075
-export PYTHONHASHSEED=$(python -c 'import random; print(random.randint(1, 4294967295))')
-
-pytest pandas --skip-slow --skip-network --skip-db -m "not single_cpu" -n 4 -r sxX "$@"