Remove Experimental Feature Flag from Documentation for Dependency Scanning

What does this MR do?

This merge request removes all mentions of the DS_EXPERIMENTAL_GRADLE_BUILTIN_PARSER feature flag from the Dependency Scanning documentation. The change minimizes configuration through experimental feature flags, reducing the need for users to manage experimental settings. This update aligns with our approach to feature flags and avoids documenting unstable options, ensuring clarity in the documentation.

Related issues

• Set DS_EXPERIMENTAL_GRADLE_BUILTIN_PARSER to tr... (#437277 - closed) • Philip Cunningham • 17.0 • On track
• Remove gemnasium-gradle-plugin and DS_EXPERIMEN... (#437278) • Unassigned • 17.1

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