build: always remove libzvbi source code

Author: dyphire

build.sh

@@ -55,8 +55,10 @@ build() {
         ninja -C $buildroot/build$bit rustup-fullclean
         ninja -C $buildroot/build$bit rustup
     fi
+    ninja -C $buildroot/build$bit libzvbi-removeprefix
     ninja -C $buildroot/build$bit update
     ninja -C $buildroot/build$bit mpv-fullclean
+    ninja -C $buildroot/build$bit libjxl
     ninja -C $buildroot/build$bit vulkan
     ninja -C $buildroot/build$bit mpv || ninja -C $buildroot/build$bit mpv
     if [ -d $buildroot/build$bit/mpv-$arch* ] ; then