fix dependency conflicts (#1266)

ofek · web-flow · commit abdc9596f9db · 2018-03-15T17:45:12.000-04:00
* Update requirements.in

* Update requirements.in
diff --git a/vsphere/requirements.in b/vsphere/requirements.in
@@ -2,7 +2,3 @@
 pyvmomi==6.0.0
 six==1.11.0
 requests==2.18.4
-certifi==2017.11.5
-chardet==3.0.4
-idna==2.6
-urllib3==1.22
