fix: remove deprecated LDAP username format support (#13165)

internal/config/identity/ldap/help.go

@@ -28,12 +28,6 @@ var (
 			Type:        "address",
 			Sensitive:   true,
 		},
-		config.HelpKV{
-			Key:         STSExpiry,
-			Description: `[DEPRECATED] temporary credentials validity duration in s,m,h,d. Default is "1h"`,
-			Optional:    true,
-			Type:        "duration",
-		},
 		config.HelpKV{
 			Key:         LookupBindDN,
 			Description: `DN for LDAP read-only service account used to perform DN and group lookups`,
@@ -60,13 +54,6 @@ var (
 			Optional:    true,
 			Type:        "string",
 		},
-		config.HelpKV{
-			Key:         UsernameFormat,
-			Description: `[DEPRECATED] ";" separated list of username bind DNs e.g. "uid=%s,cn=accounts,dc=myldapserver,dc=com"`,
-			Optional:    true,
-			Type:        "list",
-			Sensitive:   true,
-		},
 		config.HelpKV{
 			Key:         GroupSearchFilter,
 			Description: `search filter for groups e.g. "(&(objectclass=groupOfNames)(memberUid=%s))"`,