Revert "drm_hwcomposer: platformgeneric: Fix build"

This reverts commit 112903781ca34a39320d99bc68bd9f971182aa27.

Per discussion in !47 [1], this is not needed.

Signed-off-by: Sean Paul <seanpaul@chromium.org>

[1]- https://gitlab.freedesktop.org/drm-hwcomposer/drm-hwcomposer/merge_requests/47
diff --git a/Android.mk b/Android.mk
index a14ad0a..d5ee200 100644
--- a/Android.mk
+++ b/Android.mk
@@ -99,7 +99,6 @@
 LOCAL_C_INCLUDES += external/minigbm/cros_gralloc/
 else
 LOCAL_CPPFLAGS += -DUSE_DRM_GENERIC_IMPORTER
-LOCAL_C_INCLUDES += external/libdrm/android/
 endif
 
 LOCAL_MODULE := hwcomposer.drm