tests/framebuffer: Remove dead minui.h.

commit 480a3b1c6d5413e06775a9d53cb1596535fd91ae removed the last user of
this local minui.h copy in 2011.

Test: mmma system/extras/tests/framebuffer
Change-Id: Iee42ef604616dc539d4a1699ada7209c48c3bcd9
(cherry picked from commit 12c8e9996232b3b41ebe9b3fe1c288823c77f292)
(cherry picked from commit 5eda75e963bae890e82c7112ce2d8a918e32ba4d)
1 file changed