Remove PyEnchant shim for M1.

Author: freakboy3742

tox.ini

@@ -111,11 +111,6 @@ deps =
     # independent of the docs extra. Ideally, we'd use dependency groups for docs
     # dependencies, but RTD doesn't support them yet.
     -r {tox_root}/requirements-docs.txt
-passenv =
-    # On Apple silicon, you need to manually set the location of the PyEnchant
-    # library:
-    #     export PYENCHANT_LIBRARY_PATH=/opt/homebrew/lib/libenchant-2.2.dylib
-    PYENCHANT_LIBRARY_PATH
 commands =
     !lint-!all-!live : python -m sphinx {[docs]sphinx_args} {posargs} --builder html {[docs]docs_dir} {[docs]build_dir}{/}html
     lint : python -m sphinx {[docs]sphinx_args} {posargs} --builder spelling {[docs]docs_dir} {[docs]build_dir}{/}spell