CI: Fix tox

tox.ini

@@ -8,15 +8,11 @@ passenv = CI_*
 allowlist_externals =
     make
     /bin/rm
-deps = -r{toxinidir}/test-requirements.txt
+deps =
+    -r{toxinidir}/test-requirements.txt
+    -e .
 commands =
-    /bin/rm -rf build
-    python setup.py bdist_wheel
-    pip install --upgrade  --find-links={toxinidir}/dist sharelatex
-    # don't capture std{output,err}
-    # py.test -s {toxinidir}/sharelatex/tests {posargs}
     py.test {toxinidir}/sharelatex/tests {posargs}
-use_develop = True
 
 [testenv:pep8]
 basepython = python
@@ -26,8 +22,10 @@ deps = flake8
 distribute = false
 
 [testenv:docs]
-changedir = docs/
-commands=make html
+changedir = docs
+commands =
+    /bin/rm -rf build
+    make html
 
 [flake8]
 # Calling `flake8` will read this file to find configuration