f34827004 Simplify buildtools (flutter/engine#9875) (#36389)

https://github.com/flutter/engine/compare/8849d3092d5a...f3482700474a

git log 8849d3092d5aa6866501663cd62397f1a1564e67..f3482700474a791dabe9c4783568ed0fe512b04d --no-merges --oneline
f34827004 Simplify buildtools (flutter/engine#9875)

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bin/internal/engine.version

-8849d3092d5aa6866501663cd62397f1a1564e67
+f3482700474a791dabe9c4783568ed0fe512b04d