Remove test/__main__.py until runpy tests can be fixed

Lib/test/__main__.py

-import os
-import sys
-import sysconfig
-
-from test import support
-from test import regrtest
-
-# findtestdir() gets the dirname out of __file__, so we have to make it
-# absolute before changing the working directory.
-# For example __file__ may be relative when running trace or profile.
-# See issue #9323.
-__file__ = os.path.abspath(__file__)
-
-# sanity check
-assert __file__ == os.path.abspath(sys.argv[0])
-
-# When tests are run from the Python build directory, it is best practice
-# to keep the test files in a subfolder.  It eases the cleanup of leftover
-# files using command "make distclean".
-if sysconfig.is_python_build():
-    TEMPDIR = os.path.join(sysconfig.get_config_var('srcdir'), 'build')
-    TEMPDIR = os.path.abspath(TEMPDIR)
-    if not os.path.exists(TEMPDIR):
-        os.mkdir(TEMPDIR)
-    regrtest.TEMPDIR = TEMPDIR
-
-# Define a writable temp dir that will be used as cwd while running
-# the tests. The name of the dir includes the pid to allow parallel
-# testing (see the -j option).
-TESTCWD = 'test_python_{}'.format(os.getpid())
-
-TESTCWD = os.path.join(TEMPDIR, TESTCWD)
-regrtest.TESTCWD = TESTCWD
-
-# Run the tests in a context manager that temporary changes the CWD to a
-# temporary and writable directory. If it's not possible to create or
-# change the CWD, the original CWD will be used. The original CWD is
-# available from support.SAVEDCWD.
-with support.temp_cwd(TESTCWD, quiet=True):
-    regrtest.main()