builder/amazon: fix broken build

builder/amazon/common/run_config.go

@@ -112,30 +112,6 @@ func (c *RunConfig) Prepare(t *packer.ConfigTemplate) []error {
 		}
 	}
 
-	templates := map[string]*string{
-		"iam_instance_profile":    &c.IamInstanceProfile,
-		"instance_type":           &c.InstanceType,
-		"ssh_timeout":             &c.RawSSHTimeout,
-		"ssh_username":            &c.SSHUsername,
-		"ssh_private_key_file":    &c.SSHPrivateKeyFile,
-		"source_ami":              &c.SourceAmi,
-		"subnet_id":               &c.SubnetId,
-		"temporary_key_pair_name": &c.TemporaryKeyPairName,
-		"vpc_id":                  &c.VpcId,
-		"availability_zone":       &c.AvailabilityZone,
-		"user_data":               &c.UserData,
-		"user_data_file":          &c.UserDataFile,
-	}
-
-	for n, ptr := range templates {
-		var err error
-		*ptr, err = t.Process(*ptr, nil)
-		if err != nil {
-			errs = append(
-				errs, fmt.Errorf("Error processing %s: %s", n, err))
-		}
-	}
-
 	sliceTemplates := map[string][]string{
 		"security_group_ids": c.SecurityGroupIds,
 	}