Remove references to outdated deployment_type

'enterprise' is not used anymore (since 3.1) and thus can be safely
omitted for avoiding confusion.

DEPLOYMENT_TYPES.md

@@ -8,17 +8,10 @@ hosts file).
 
 The table below outlines the defaults per `openshift_deployment_type`:
 
-| openshift_deployment_type                                       | origin                                   | enterprise (< 3.1)                     | openshift-enterprise (>= 3.1)          |
-|-----------------------------------------------------------------|------------------------------------------|----------------------------------------|----------------------------------------|
-| **openshift.common.service_type** (also used for package names) | origin                                   | openshift                              |                                        |
-| **openshift.common.config_base**                                | /etc/origin                              | /etc/openshift                         | /etc/origin                            |
-| **openshift.common.data_dir**                                   | /var/lib/origin                          | /var/lib/openshift                     | /var/lib/origin                        |
-| **openshift.master.registry_url openshift.node.registry_url**   | openshift/origin-${component}:${version} | openshift3/ose-${component}:${version} | openshift3/ose-${component}:${version} |
-| **Image Streams**                                               | centos                                   | rhel + xpaas                           | rhel                                   |
-
-
-**NOTES**:
-
-- `enterprise` deployment type is used for OpenShift Enterprise version
-3.0.x.
-- `openshift-enterprise` deployment type is used for OpenShift Enterprise (and now OpenShift Container Platform) version 3.1 and later.
+| openshift_deployment_type                                       | origin                                   | openshift-enterprise                   |
+|-----------------------------------------------------------------|------------------------------------------|----------------------------------------|
+| **openshift.common.service_type** (also used for package names) | origin                                   |                                        |
+| **openshift.common.config_base**                                | /etc/origin                              | /etc/origin                            |
+| **openshift.common.data_dir**                                   | /var/lib/origin                          | /var/lib/origin                        |
+| **openshift.master.registry_url openshift.node.registry_url**   | openshift/origin-${component}:${version} | openshift3/ose-${component}:${version} |
+| **Image Streams**                                               | centos                                   | rhel                                   |