Remove Android.mk rules for building bootctrl.
am: 7bde6868ff

Change-Id: I63a8e9654c1d230e28ec81cb5a0aa83f019ac087
tree: 96cca2d3a244892f9167aa4396069ea6fa2d3431
  1. Android.bp
  2. boot_control.cpp
  3. NOTICE