CI ARM: remove buster compat

Author: MartinPulec

.github/scripts/Linux/arm/bootstrap.sh

@@ -21,34 +21,16 @@ http://archive.raspberrypi.org/debian $debver main
 EOF
 apt -y update
 
-if [ "$debver" = buster ]; then
-        raspbian_build_sdl2() { (
-                sed -i '/^deb /p;s/deb /deb-src /' /etc/apt/sources.list
-                apt -y update
-                apt-get -y build-dep libsdl2-dev
-                apt -y install libgbm-dev
-                readonly sdl_ver=2.0.22
-                curl -k -LO https://www.libsdl.org/release/SDL2-$sdl_ver.tar.gz
-                tar xaf SDL2-$sdl_ver.tar.gz
-                cd SDL2-$sdl_ver
-                ./configure --enable-video-kmsdrm
-                make -j "$(nproc)" install
-        ); }
-        # 3.16 in the added repository is broken with chrooted qemu-user-static
-        apt -y install cmake=3.13.4-1 cmake-data=3.13.4-1
-        raspbian_build_sdl2
-else
-        apt -y install cmake libsdl2-dev
-fi
-
 apt -y install autoconf automake build-essential git pkg-config libtool sudo
 apt -y install libcurl4-openssl-dev libsoxr-dev libspeexdsp-dev libssl-dev
 apt -y install libasound2-dev portaudio19-dev libjack-dev
 apt -y install libglew-dev libglfw3-dev libglm-dev
 apt -y install libcaca-dev libmagickwand-dev libnatpmp-dev libopencv-core-dev libopencv-imgproc-dev libv4l-dev
 apt -y install libavcodec-dev libavformat-dev libswscale-dev libraspberrypi-dev
-apt -y install libdrm-dev\
-  libsdl2-mixer-dev libsdl2-ttf-dev\
+apt -y install \
+  cmake \
+  libdrm-dev\
+  libsdl2-dev libsdl2-mixer-dev libsdl2-ttf-dev\
   libva-dev\
 
 /.github/scripts/install-common-deps.sh