pam/integration-tests: Remove unused tapes for mismatching user

This is something that we don't support anymore as per commit
e91ab76 and if we'd do it, it wouldn't work well anyways since it
would imply changing the PAM user, which as we know may lead to
logging-in wrongly as CVE-2024-9313 taught us

examplebroker/broker.go

@@ -95,19 +95,18 @@ type userInfoBroker struct {
 var (
 	exampleUsersMu = sync.RWMutex{}
 	exampleUsers   = map[string]userInfoBroker{
-		"user1":                 {Password: "goodpass"},
-		"user2":                 {Password: "goodpass"},
-		"user3":                 {Password: "goodpass"},
-		"user-mfa":              {Password: "goodpass"},
-		"user-mfa-with-reset":   {Password: "goodpass"},
-		"user-needs-reset":      {Password: "goodpass"},
-		"user-needs-reset2":     {Password: "goodpass"},
-		"user-can-reset":        {Password: "goodpass"},
-		"user-can-reset2":       {Password: "goodpass"},
-		"user-local-groups":     {Password: "goodpass"},
-		"user-pre-check":        {Password: "goodpass"},
-		"user-sudo":             {Password: "goodpass"},
-		"user-mismatching-name": {Password: "goodpass"},
+		"user1":               {Password: "goodpass"},
+		"user2":               {Password: "goodpass"},
+		"user3":               {Password: "goodpass"},
+		"user-mfa":            {Password: "goodpass"},
+		"user-mfa-with-reset": {Password: "goodpass"},
+		"user-needs-reset":    {Password: "goodpass"},
+		"user-needs-reset2":   {Password: "goodpass"},
+		"user-can-reset":      {Password: "goodpass"},
+		"user-can-reset2":     {Password: "goodpass"},
+		"user-local-groups":   {Password: "goodpass"},
+		"user-pre-check":      {Password: "goodpass"},
+		"user-sudo":           {Password: "goodpass"},
 	}
 )
 
@@ -896,9 +895,6 @@ func userInfoFromName(name string) string {
 
 	case "user-sudo":
 		user.Groups = append(user.Groups, groupJSONInfo{Name: "sudo", UGID: ""}, groupJSONInfo{Name: "admin", UGID: ""})
-
-	case "user-mismatching-name":
-		user.Name = "mismatching-username"
 	}
 
 	// only used for tests, we can ignore the template execution error as the returned data will be failing.