Remove docker package from bindep

This change removes the docker package from bindep because it
can create a conflict with the way infra installs docker(ce).
To ensure we're not installing a conflicting package in test
we're removing this package from our general bindep file.

Change-Id: Ib642b8c15224300d727a03146da783f225142c82
Signed-off-by: Kevin Carter <kecarter@redhat.com>

bindep.txt

@@ -30,6 +30,3 @@ gzip
 
 # Required to build language docs
 gettext
-
-# Required for molecule testing
-docker