Final removal of original boto SDK (ansible-collections#898)

[Breaking Change] Final removal of original boto SDK

SUMMARY

Remove old boto based inventory script
Clean up requirements
Clean up random comments in docs/comments

ISSUE TYPE

Feature Pull Request

COMPONENT NAME
scripts/inventory/ec2.py
requirements.txt
test-requirements.txt
tests/integration/requirements.txt
tests/unit/requirements.txt
ADDITIONAL INFORMATION

Reviewed-by: Alina Buzachis <None>

This commit was initially merged in https://github.com/ansible-collections/community.aws
See: ansible-collections/community.aws@00037be

plugins/modules/route53.py

@@ -413,7 +413,7 @@ def get_zone_id_by_name(route53, module, zone_name, want_private, want_vpc_id):
 
         if private_zone == want_private and zone['Name'] == zone_name:
             if want_vpc_id:
-                # NOTE: These details aren't available in other boto methods, hence the necessary
+                # NOTE: These details aren't available in other boto3 methods, hence the necessary
                 # extra API call
                 hosted_zone = route53.get_hosted_zone(aws_retry=True, Id=zone_id)
                 if want_vpc_id in [v['VPCId'] for v in hosted_zone['VPCs']]: