remove jqueryEnv when updating to 4.0.31

https://cenw-wscoe.github.io/sgdc-cdts/docs/internet-en.html#Section_.3Chead.3E_references

> Removed in v4.0.31 - Optional - jqueryEnv – Use this variable to specify which environment you want to pull the jQuery files from. By default they are loaded locally from the WET build. Otherwise use the following to load from Google CDN: "jqueryEnv": "external"