Simplify npm install

Reviewed By: mkonicek

Differential Revision:D3041006
Ninja: oss only

fb-gh-sync-id: 9d472aaa0fe383084c18a303e704633dec56d57d
shipit-source-id: 9d472aaa0fe383084c18a303e704633dec56d57d

scripts/e2e-test-lego.sh

@@ -57,7 +57,7 @@ cd $TEMP
 # published on npm
 # Temporarily installing sinopia from a github fork
 # TODO t10060166 use npm repo when bug is fixed
-which sinopia || ${NPM_PATH}npm install -g git://github.com/bestander/sinopia.git#68707efbab90569d5f52193138936f9281cc410c
+which sinopia || ${NPM_PATH}npm install -g sinopia
 
 # but in order to make npm use sinopia we temporarily
 # replace its config file