Remove unused microdroid kernel module build rules am: c01a30e2d4 am: 3ab545c427

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

Change-Id: Ib99d5dc847f4b693061f969f1c36da99e5f789ed
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>