buildsystem: remove VLC_BUILD_DIR/include

It should be VLC_BUILD_DIR/install/include where the VLC builds
puts the public headers.
This folder is empty.
But we include the folders from the VLC source tree.

buildsystem/build-libvlcjni.sh

@@ -167,7 +167,6 @@ $NDK_BUILD -C $LIBVLCJNI_ROOT/libvlc \
     APP_STL="c++_shared" \
     APP_CPPFLAGS="-frtti -fexceptions" \
     VLC_SRC_DIR="$VLC_SRC_DIR" \
-    VLC_BUILD_DIR="$VLC_BUILD_DIR" \
     APP_BUILD_SCRIPT=jni/libvlcjni.mk \
     APP_PLATFORM=android-${ANDROID_API} \
     APP_ABI=${ANDROID_ABI} \

libvlc/jni/libvlcjni.mk

@@ -14,7 +14,7 @@ LOCAL_SRC_FILES += libvlcjni-vlcobject.c
 LOCAL_SRC_FILES += libvlcjni-media.c libvlcjni-medialist.c libvlcjni-mediadiscoverer.c libvlcjni-rendererdiscoverer.c
 LOCAL_SRC_FILES += libvlcjni-dialog.c
 LOCAL_SRC_FILES += std_logger.c
-LOCAL_C_INCLUDES := $(VLC_SRC_DIR)/include $(VLC_BUILD_DIR)/include
+LOCAL_C_INCLUDES := $(VLC_SRC_DIR)/include
 LOCAL_CFLAGS := -std=c17
 LOCAL_LDLIBS := -llog
 LOCAL_SHARED_LIBRARIES := libvlc