Rust: remove shipped feature flag #9765

Job	Run time
check-codeql-versions	54s
analyze-actions	1m 1s
analyze-javascript (ubuntu-22.04)	4m 5s
analyze-javascript (ubuntu-24.04)	4m 10s
analyze-javascript (ubuntu-24.04, linked)	4m 5s
analyze-javascript (windows-2022, linked)	6m 7s
analyze-javascript (windows-2022)	6m 10s
analyze-javascript (ubuntu-22.04, linked)	4m 5s
analyze-javascript (macos-14)	5m 6s
analyze-javascript (windows-2025)	8m 56s
analyze-javascript (macos-14, linked)	4m 48s
analyze-javascript (macos-15)	6m 14s
analyze-javascript (macos-15, linked)	5m 19s
analyze-javascript (macos-13)	10m 54s
analyze-javascript (macos-13, linked)	9m 32s
analyze-javascript (windows-2025, linked)	9m 44s
	1h 31m 10s

Provide feedback