Remove deprecated container scanning report format from rails parser

Summary

The purpose of this issue is to remove the deprecated container scanning report format which was based on output provided by clair-scanner. Now that #32934 (closed) has been completed, we no longer need to support this old format so this dead code can be removed.

Improvements

Remove unnecessary code

Involved components

Remove the following files:

• DeprecatedContainerScanning
• DeprecatedFormattedContainerScanningVulnerability

Remove the following methods:

• format_deprecated_report

And all references to deprecated_container_scanning_report should also be removed

Availability and Testing

Ensure that any rewrite of the container scanning test adheres to the new format.