remove deprecated install script

install.sh

@@ -1,15 +0,0 @@
-#!/bin/sh -e
-
-script_dir=$(dirname "$0")
-cd "$script_dir"
-
-[ $(id -u) -ne 0 ] && echo "You need root privileges to run the install script" && exit 1
-
-echo "Warning: this install.sh script is deprecated. Use meson directly instead if possible"
-
-rm -rf build
-meson setup build
-meson configure --prefix=/usr --buildtype=release -Dsystemd=true -Dstrip=true build
-ninja -C build install
-
-echo "Successfully installed gpu-screen-recorder"