Merge "tox: Drop envdir"

tox.ini

@@ -31,7 +31,6 @@ commands =
   bashate devstack/plugin.sh
 
 [testenv:fast8]
-envdir = {toxworkdir}/pep8
 deps = {[testenv:pep8]deps}
 commands =
   {toxinidir}/tools/fast8.sh
@@ -142,7 +141,6 @@ commands=
 # the workaround after this patch has merged:
 # https://review.opendev.org/#/c/679860
 [testenv:pdf-docs]
-envdir = {toxworkdir}/docs
 deps = {[testenv:docs]deps}
 allowlist_externals =
   make
@@ -155,12 +153,10 @@ commands =
   make -C doc/build/pdf
 
 [testenv:releasenotes]
-envdir = {toxworkdir}/docs
 deps = {[testenv:docs]deps}
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
 
 [testenv:api-ref]
-envdir = {toxworkdir}/docs
 deps = {[testenv:docs]deps}
 commands =
   bash -c "rm -rf api-ref/build"