remove explicit tool restore

Author: leastprivilege

build.cmd

@@ -1,4 +1,3 @@
 @echo off
 
-dotnet tool restore
 dotnet run --project build -- %*

build.ps1

@@ -1,4 +1,3 @@
 $ErrorActionPreference = "Stop";
 
-dotnet tool restore
 dotnet run --project build -- $args

build.sh

@@ -1,5 +1,4 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-dotnet tool restore
 dotnet run --project build -- "$@"