revert(partial): "Filter users by tenant, add tenant ids to demo users"

This reverts parts of commit 926a2c2080.

The LDAP identity backend of the graph service was supposed to stay single-tenant
only. The focus for multi-tenancy should be on the CS3 identity backend.

Also lets keep the internal IDM and demo users clean of any
multi-tenancy stuff for now.

services/idm/pkg/command/server.go

@@ -132,7 +132,6 @@ func bootstrap(logger log.Logger, cfg *config.Config, srvcfg server.Config) erro
 		Name     string
 		Password string
 		ID       string
-		TenantID string
 		Issuer   string
 	}
 
@@ -152,16 +151,12 @@ func bootstrap(logger log.Logger, cfg *config.Config, srvcfg server.Config) erro
 	}
 
 	if cfg.AdminUserID != "" {
-		adminUser := svcUser{
+		serviceUsers = append(serviceUsers, svcUser{
 			Name:     "admin",
 			Password: cfg.ServiceUserPasswords.OCAdmin,
 			ID:       cfg.AdminUserID,
 			Issuer:   cfg.DemoUsersIssuerUrl,
-		}
-		if cfg.CreateDemoUsers {
-			adminUser.TenantID = "cd22ea13-f6b4-4f5f-a2c2-69b5a0f07a8b"
-		}
-		serviceUsers = append(serviceUsers, adminUser)
+		})
 	}
 
 	bdb := &ldbbolt.LdbBolt{}