Fix Arch Linux install_dependencies.sh (#6051)

RtAudio can now be obtained through the official repositories and pkg-config has also been replaced with pkgconf.

scripts/linux/archlinux/install_dependencies.sh

@@ -10,19 +10,10 @@ if [ $EUID != 0 ]; then
    exit 1
 fi
 
-pacman -Sy --needed make pkg-config gcc openal glew freeglut freeimage gstreamer gst-plugins-base gst-plugins-good gst-plugins-bad gst-libav opencv libxcursor assimp boost glfw-x11 uriparser curl pugixml
+pacman -Sy --needed make pkgconf gcc openal glew freeglut freeimage gstreamer gst-plugins-base gst-plugins-good gst-plugins-bad gst-libav opencv libxcursor assimp boost glfw-x11 uriparser curl pugixml rtaudio
 
 exit_code=$?
 if [ $exit_code != 0 ]; then
 	echo "error installing packages, there could be an error with your internet connection"
 	exit $exit_code
 fi
-
-echo ""
-echo ""
-echo "NOTE FOR RTAUDIO"
-echo "====================="
-echo "OpenFramworks requires rtaudio. This package is not in the official repositories and has to be installed via aur. https://aur.archlinux.org/packages/rtaudio/ You can do it manually or use an aur helper like yaourt to do it for you."
-echo ""
-read -p "Press any key to continue... " -n1 -s
-