Remove Cronet am: 21b36398ab

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Cronet/+/15072300

Change-Id: I965d81deb5eec0560a2314200e379c9519d3c94b
tree: 4b825dc642cb6eb9a060e54bf8d69288fbee4904

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