remove rust_stdlib_prebuilt_rlib_host modules am: 765467cb32

Original change: https://android-review.googlesource.com/c/platform/prebuilts/rust/+/2803041

Change-Id: Ic830a25d369ba572db24160c80ee3e020bbd8ba7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>