[FEATURE] Remove retired AWS Security Hub controls

[ColinL2021]

Required Basic Info
To properly assess the enhancement request, we require information on the version of the Accelerator you based this request upon:

• Accelerator Version: v1.5.8-a

Is your feature request related to a problem? Please describe.
There are AWS Security Hub controls that have retired.
Refer to : https://docs.aws.amazon.com/securityhub/latest/userguide/doc-history.html

Retiring the Lambda.4 control:
Security Hub is retiring the control [Lambda.4] Lambda functions should have a dead-letter queue configured. When a control is retired, it no longer displays on the console, and Security Hub does not perform checks against it.

Retiring the PCI.EC2.3 control:
Security Hub is retiring the control [PCI.EC2.3] Unused EC2 security groups should be removed. When a control is retired, it no longer displays on the console, and Security Hub does not perform checks against it.

Describe the solution you'd like
A clear and concise description of what you want to happen.
Remove the controls Lambda.4 and PCI.EC2.3 from all sample configs in the "security-hub-frameworks" section under "controls-to-disable".

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
N/A

Additional context
Add any other context or screenshots about the feature request here.
N/A

[archikierstead]

merged