chore: remove React Native 0.71 leftover in `build.gradle` #913

Job	Run time
build (macos, fabric-view, kotlin-objc)	2m 18s
build (macos, legacy-module, kotlin-swift)	1m 56s
build (macos, legacy-module, cpp)	2m 22s
build (macos, legacy-module, kotlin-objc)	1m 46s
build (macos, legacy-view, kotlin-swift)	1m 50s
build (macos, legacy-view, kotlin-objc)	2m 1s
build (macos, turbo-module, cpp)	1m 52s
build (macos, turbo-module, kotlin-objc)	2m 13s
build (ubuntu, fabric-view, kotlin-objc)	1m 29s
build (ubuntu, legacy-module, cpp)	1m 25s
build (ubuntu, legacy-module, kotlin-swift)	1m 26s
build (ubuntu, legacy-view, kotlin-swift)	1m 28s
build (ubuntu, legacy-module, kotlin-objc)	1m 34s
build (ubuntu, legacy-view, kotlin-objc)	1m 35s
build (ubuntu, turbo-module, cpp)	1m 26s
build (ubuntu, library, js)	1m 26s
build (ubuntu, turbo-module, kotlin-objc)	1m 26s
	29m 33s

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