Remove comments that Tox cannot parse correctly

An interim fix for ansible#1973.

Signed-off-by: Luke Murphy <lukewm@riseup.net>

tox.ini

@@ -26,7 +26,7 @@ deps =
     pytest-verbose-parametrize==1.4.0
     pytest-xdist==1.26.0
     shade==1.22.2
-    yapf>=0.25.0,<0.27  # pyup: < 0.27 # disable updates, conflicts with flake8 as per https://github.com/ansible/molecule/pull/1915
+    yapf>=0.25.0,<0.27
 
     ansible25: ansible>=2.5,<2.6
     ansible26: ansible>=2.6,<2.7
@@ -69,7 +69,7 @@ usedevelop = false
 [testenv:format]
 commands =
     yapf -i -r molecule/ test/
-deps = yapf>=0.25.0,<0.27  # pyup: < 0.27 # disable updates, conflicts with flake8 as per https://github.com/ansible/molecule/pull/1915
+deps = yapf>=0.25.0,<0.27
 extras =
 skip_install = true
 usedevelop = false