Remove unused microdroid kernel module build rules am: c01a30e2d4

Original change: https://android-review.googlesource.com/c/kernel/prebuilts/common-modules/virtual-device/5.10/x86-64/+/2276910

Change-Id: I51c50d9076ad936bca21497a27fe382d12ac9123
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>