Fix pkiUser

Remove krbname (now builtin)

servers/slapd/schema/core.schema

@@ -452,7 +452,7 @@ objectclass ( 2.5.6.20 NAME 'dmd'
 objectclass ( 2.5.6.21 NAME 'pkiUser'
 	DESC 'RFC2587: a PKI user'
 	SUP top AUXILIARY
-	MUST userCertificate )
+	MAY userCertificate )
 
 objectclass ( 2.5.6.22 NAME 'pkiCA'
 	DESC 'RFC2587: PKI certificate authority'
@@ -526,14 +526,6 @@ attributetype ( 0.9.2342.19200300.100.1.37
 	SUBSTR caseIgnoreIA5SubstringsMatch
 	SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 )
 
-# From U-Mich
-attributetype ( 1.3.6.1.4.1.250.1.32
-	NAME ( 'krbName' 'kerberosName' )
-	DESC 'Kerberos principal associated with object'
-	EQUALITY caseIgnoreIA5Match
-	SYNTAX 1.3.6.1.4.1.1466.115.121.1.26
-	SINGLE-VALUE )
-
 # RFC 2459
 attributetype ( 1.2.840.113549.1.9.1
 	NAME ( 'email' 'emailAddress' 'pkcs9email' )