Index: oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/name/NamespaceConstants.java
===================================================================
--- oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/name/NamespaceConstants.java	(revision 1453319)
+++ oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/name/NamespaceConstants.java	(working copy)
@@ -36,9 +36,6 @@
     String PREFIX_SV = "sv";
     String NAMESPACE_SV = "http://www.jcp.org/jcr/sv/1.0";
 
-    String PREFIX_REP = "rep";
-    String NAMESPACE_REP = "internal"; // TODO: see OAK-74
-
     // additional XML namespace
     String PREFIX_XMLNS = "xmlns";
     String NAMESPACE_XMLNS = "http://www.w3.org/2000/xmlns/";
@@ -52,7 +49,6 @@
             NamespaceRegistry.PREFIX_NT,
             NamespaceRegistry.PREFIX_MIX,
             PREFIX_XMLNS,
-            PREFIX_REP,
             PREFIX_SV
     ));
 
@@ -65,7 +61,6 @@
             NamespaceRegistry.NAMESPACE_NT,
             NamespaceRegistry.NAMESPACE_MIX,
             NAMESPACE_XMLNS,
-            NAMESPACE_REP,
             NAMESPACE_SV
     ));
 }
\ No newline at end of file
Index: oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/name/Namespaces.java
===================================================================
--- oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/name/Namespaces.java	(revision 1453319)
+++ oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/name/Namespaces.java	(working copy)
@@ -46,7 +46,6 @@
 
         // Namespace included in Jackrabbit 2.x
         DEFAULTS.put(PREFIX_SV, NAMESPACE_SV);
-        DEFAULTS.put(PREFIX_REP, NAMESPACE_REP);
     }
 
     public static Map<String, String> getNamespaceMap(Tree root) {
Index: oak-jcr/src/test/java/org/apache/jackrabbit/oak/jcr/security/privilege/PrivilegeRegistrationTest.java
===================================================================
--- oak-jcr/src/test/java/org/apache/jackrabbit/oak/jcr/security/privilege/PrivilegeRegistrationTest.java	(revision 1453319)
+++ oak-jcr/src/test/java/org/apache/jackrabbit/oak/jcr/security/privilege/PrivilegeRegistrationTest.java	(working copy)
@@ -246,7 +246,6 @@
         // invalid privilege name
         illegal.put(null, new String[0]);
         illegal.put("jcr:privilegeName", new String[0]);
-        illegal.put("rep:privilegeName", new String[0]);
         illegal.put("nt:privilegeName", new String[0]);
         illegal.put("mix:privilegeName", new String[0]);
         illegal.put("sv:privilegeName", new String[0]);