Remove unused microdroid kernel module build rules am: c01a30e2d4 am: 3ab545c427 am: 7d7f1e4adb

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

Change-Id: I8c6cd2d89b07c5eff4de6ee770d3127b57bd285b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>