diff --git a/misc/download-mypyc-wheels.py b/misc/download-mypyc-wheels.py
deleted file mode 100755
index 0b9722cabd574..0000000000000
--- a/misc/download-mypyc-wheels.py
+++ /dev/null
@@ -1,56 +0,0 @@
-#!/usr/bin/env python3
-# Script for downloading mypyc-compiled mypy wheels in preparation for a release
-
-import os
-import os.path
-import sys
-from urllib.request import urlopen
-
-
-PLATFORMS = [
-    'macosx_10_{macos_ver}_x86_64',
-    'manylinux1_x86_64',
-    'win_amd64',
-]
-MIN_VER = 5
-MAX_VER = 8
-BASE_URL = "https://github.com/mypyc/mypy_mypyc-wheels/releases/download"
-URL = "{base}/v{version}/mypy-{version}-cp3{pyver}-cp3{pyver}{abi_tag}-{platform}.whl"
-
-def download(url):
-    print('Downloading', url)
-    name = os.path.join('dist', os.path.split(url)[1])
-    with urlopen(url) as f:
-        data = f.read()
-    with open(name, 'wb') as f:
-        f.write(data)
-
-def download_files(version):
-    for pyver in range(MIN_VER, MAX_VER + 1):
-        for platform in PLATFORMS:
-            abi_tag = "" if pyver >= 8 else "m"
-            macos_ver = 9 if pyver >= 6 else 6
-            url = URL.format(
-                base=BASE_URL,
-                version=version,
-                pyver=pyver,
-                abi_tag=abi_tag,
-                platform=platform.format(macos_ver=macos_ver)
-            )
-            # argh, there is an inconsistency here and I don't know why
-            if 'win_' in platform:
-                parts = url.rsplit('/', 1)
-                parts[1] = parts[1].replace("+dev", ".dev")
-                url = '/'.join(parts)
-
-            download(url)
-
-def main(argv):
-    if len(argv) != 2:
-        sys.exit("Usage: download-mypy-wheels.py version")
-
-    os.makedirs('dist', exist_ok=True)
-    download_files(argv[1])
-
-if __name__ == '__main__':
-    main(sys.argv)
diff --git a/misc/test_installed_version.sh b/misc/test_installed_version.sh
deleted file mode 100755
index 7182c9556a12a..0000000000000
--- a/misc/test_installed_version.sh
+++ /dev/null
@@ -1,42 +0,0 @@
-#!/bin/bash -ex
-
-# Usage: misc/test_installed_version.sh [wheel] [python command]
-# Installs a version of mypy into a virtualenv and tests it.
-
-# A bunch of stuff about mypy's code organization and test setup makes
-# it annoying to test an installed version of mypy. If somebody has a
-# better way please let me know.
-
-function abspath {
-    python3 -c "import os.path; print(os.path.abspath('$1'))"
-}
-
-TO_INSTALL="${1-.}"
-PYTHON="${2-python3}"
-VENV="$(mktemp -d -t mypy-test-venv.XXXXXXXXXX)"
-trap "rm -rf '$VENV'" EXIT
-
-"$PYTHON" -m virtualenv "$VENV"
-source "$VENV/bin/activate"
-
-ROOT="$PWD"
-TO_INSTALL="$(abspath "$TO_INSTALL")"
-
-# Change directory so we can't pick up any of the stuff in the root.
-# We need to do this before installing things too because I was having
-# the current mypy directory getting picked up as satisfying the
-# requirement (argh!)
-cd "$VENV"
-
-pip install -r "$ROOT/test-requirements.txt"
-pip install $TO_INSTALL
-
-# pytest looks for configuration files in the parent directories of
-# where the tests live. Since we are trying to run the tests from
-# their installed location, we copy those into the venv. Ew ew ew.
-cp "$ROOT/pytest.ini" "$ROOT/conftest.py" "$VENV/"
-
-# Find the directory that mypy tests were installed into
-MYPY_TEST_DIR="$(python3 -c 'import mypy.test; print(mypy.test.__path__[0])')"
-# Run the mypy tests
-MYPY_TEST_PREFIX="$ROOT" python3 -m pytest "$MYPY_TEST_DIR"/test*.py