ANDROID: Remove DMA-BUF support from microdroid

Microdroid does not interface with peripherals and therefore does not
need dma-buf support, so remove it.

Bug: 432329937
Change-Id: Ie7adb18bbb796129f7d50eb17a6deba061547981
[isaacmanjarres: resolved contextual merge conflicts from forward
porting from android15-6.6.]
Signed-off-by: Isaac J. Manjarres <isaacmanjarres@google.com>