Node 11 is fixed, so let’s remove this.

When a script is invoked by yarn, it provides the appropriate -r via NODE_OPTIONS. This makes all node scripts invoke via yarn automatically pnp aware. 

Unfortunately NODE_OPTIONS was partially broken in node 11, preventing this from working.
Luckily node 11.12 fixed this issue.

Relevant issue: nodejs/node#26521

tests/index-test.ts

@@ -80,7 +80,7 @@ describe('resolve-package-path', function() {
           app.pkg.private = true;
           app.pkg.name
           app.pkg.scripts = {
-            test: "node -r ./.pnp.js ./test.js"
+            test: "node ./test.js"
           };
           app.pkg.installConfig = {
             pnp: true