Remove unused microdroid kernel module build rules am: d83a4bd34d

Original change: https://android-review.googlesource.com/c/kernel/prebuilts/common-modules/virtual-device/5.10/arm64/+/2276909

Change-Id: Ic5ae6fbfb2b2ff9218d61eb45a71b21ef2b3edc9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>