community/sdl2: drop DirectFB support

Unnecessary since
https://gitlab.com/postmarketOS/pmaports/-/merge_requests/4732 got merged.

Signed-off-by: David Heidelberg <david@ixit.cz>

community/sdl2/APKBUILD

@@ -2,12 +2,12 @@
 # Maintainer: Simon Zeni <simon@bl4ckb0ne.ca>
 pkgname=sdl2
 pkgver=2.28.5
-pkgrel=0
+pkgrel=1
 pkgdesc="development library designed to provide low level access to audio, keyboard, mouse, joystick and graphics"
 url="https://www.libsdl.org"
 arch="all"
 license="Zlib"
-depends_dev="$pkgname directfb-dev mesa-dev"
+depends_dev="$pkgname mesa-dev"
 makedepends="
 	alsa-lib-dev
 	cmake
@@ -50,8 +50,6 @@ builddir="$srcdir/SDL2-$pkgver"
 #     - CVE-2019-7638
 
 build() {
-	# NOTE: Please do not remove the -DSDL_DIRECTFB=ON flag.
-	# Some apps, used for booting Alpine derivatives, require this to function!
 	if [ "$CBUILD" != "$CHOST" ]; then
 		CMAKE_CROSSOPTS="-DCMAKE_SYSTEM_NAME=Linux -DCMAKE_HOST_SYSTEM_NAME=Linux"
 	fi
@@ -73,7 +71,7 @@ build() {
 		-DSDL_NAS=OFF \
 		-DSDL_RPATH=OFF \
 		-DSDL_X11=ON \
-		-DSDL_DIRECTFB=ON \
+		-DSDL_DIRECTFB=OFF \
 		-DSDL_WAYLAND=ON \
 		-DSDL_STATIC=ON \
 		-DSDL_SHARED=ON \