[Cronet] Remove static_libs from genrules am: 32f47411d0

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2497536

Change-Id: I7d680e3d26d080cf7ef595c96cd75eb3fe3af20b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>