Downstream test: revert AssetGraph workaround
Downstream test: revert AssetGraph workaround

The workaround is not necessary anymore (solved in AssetGraph itself).

Refs #1665
Closes gh-1676

bcbcarl/esprima,bcbcarl/esprima,ChromeDevTools/esprima,ariya/esprima,ariya/esprima,jquery/esprima,jquery/esprima,jquery/esprima,ariya/esprima,ChromeDevTools/esprima,bcbcarl/esprima,ChromeDevTools/esprima