Revert "build: run npm audit as part of ci test"

This reverts commit 106d188c81.

Reason for revert: from internal feedback - often the vulnerabilities are either false-positive or not impacting us, so blocking all dev work may not be a great idea.

Change-Id: Ia93867485c83583e69f4371cde4e9f08f9f883f2
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/397414
Reviewed-by: Robert Findley <rfindley@google.com>
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>

build/all.bash

@@ -49,7 +49,6 @@ run_test() {
   npm run unit-test
   npm test --silent
   npm run lint
-  npm audit
 
   echo "**** Run settings generator ****"
   go run tools/generate.go -w=false -gopls=true