Official arm64 builds are being published now

I can't imagine it'll work without this but let's try

.github/workflows/ci.yml

@@ -34,16 +34,6 @@ jobs:
         uses: actions/setup-node@v1
         with:
           node-version: ${{ matrix.node }}
-
-      # This step can be removed as soon as official Windows arm64 builds are published:
-      # https://github.com/nodejs/build/issues/2450#issuecomment-705853342
-      - run: |
-          $NodeVersion = (node --version) -replace '^.'
-          $NodeFallbackVersion = "15.8.0"
-          & .\script\download-node-lib-win-arm64.ps1 $NodeVersion $NodeFallbackVersion
-        if: ${{ matrix.os == 'windows-latest' }}
-        name: Install Windows arm64 node.lib
-
       - name: Install and build
         run: |
           yarn install

script/download-node-lib-win-arm64.ps1

@@ -1,36 +0,0 @@
-# This script can be removed as soon as official Windows arm64 builds are published:
-# https://github.com/nodejs/build/issues/2450#issuecomment-705853342
-
-$nodeVersion = $args[0]
-$fallbackVersion = $args[1]
-
-If ($null -eq $nodeVersion -Or $null -eq $fallbackVersion) {
-  Write-Error "No NodeJS version given as argument to this file. Run it like download-nodejs-win-arm64.ps1 NODE_VERSION NODE_FALLBACK_VERSION"
-  exit 1
-}
-
-$url = "https://unofficial-builds.nodejs.org/download/release/v$nodeVersion/win-arm64/node.lib"
-$fallbackUrl = "https://unofficial-builds.nodejs.org/download/release/v$fallbackVersion/win-arm64/node.lib"
-
-# Always write to the $nodeVersion cache folder, even if we're using the fallbackVersion
-$cacheFolder = "$env:TEMP\prebuild\napi\$nodeVersion\arm64"
-
-If (!(Test-Path $cacheFolder)) {
-  New-Item -ItemType Directory -Force -Path $cacheFolder
-}
-
-$output = "$cacheFolder\node.lib"
-$start_time = Get-Date
-
-Try {
-  Invoke-WebRequest -Uri $url -OutFile $output
-  $downloadedNodeVersion = $nodeVersion
-} Catch {
-  If ($_.Exception.Response -And $_.Exception.Response.StatusCode -eq "NotFound") {
-    Write-Output "No arm64 node.lib found for Node Windows $nodeVersion, trying fallback version $fallbackVersion..."
-    Invoke-WebRequest -Uri $fallbackUrl -OutFile $output
-    $downloadedNodeVersion = $fallbackVersion
-  }
-}
-
-Write-Output "Downloaded arm64 NodeJS lib v$downloadedNodeVersion to $output in $((Get-Date).Subtract($start_time).Seconds) second(s)"