[bug] AWS: deprovision --all does not deprovision all resources in AWS

[jpo-tu]

Describe the bug
The deprovision --all command does not deprovision all resources in AWS.

To Reproduce

1. initiate a copy or sync from any cloud provider to AWS; this provisions a VPC and ancillary resources in AWS
2. deprovision everything:

   skyplane deprovision --all

Expected behavior
All resources created by skyplane in AWS - that is, EC2 instances, instance profiles, security groups, route table associations, VPC endpoints, nacls, subnets, internet gateways, VPCs - should be deleted.

Actual behavior
Only EC2 instance profiles are deleted. EC2 instances themselves are typically already terminated at the end of a copy/sync.

Output:

root@28e526f36e9b:/workdir# skyplane deprovision --all
No instances to deprovision
✓ Removing IPs from VPCs (1/1) in 1.95s
Deleting firewall rule: allow-default-4db23ad1
Deleting firewall rule: allow-default-9bb0b9df
Deleting firewall rule: skyplane-default-allow-icmp
Deleting firewall rule: skyplane-default-allow-internal
Deleting firewall rule: skyplane-default-allow-ssh

Environment info:

• OS: Debian GNU/Linux 11 (bullseye)
• Python version 3.9.2
• Skyplane version 0.3.2

Additional context
Why isn't delete_vpc invoked when deprovisioning in AWS?