Remove jquery sources from repo

[alvarezguille]

there is a deprecated @source for jquery
@Source("jquery.min.js") @Deprecated TextResource jquery();
but the resource loading doesn't use it, it just checks for jquery and loads highcharts standalone framework
if (!hasJQuery()) { inject(HighchartResources.INSTANCE.standaloneframework().getText()); }
We should still remove it since having it there might trigger some security scanners and cause uncertainty
Change should be done for charts 3 and 4

[alvarezguille]

This issue was fixed in #540 and #539 and will be released in Charts 3.3 and 4.1.
As I mentioned before the source was deprecated and sent to client but not used except in the serverside SVG generator.
Not it will be not included nor referenced in both client and server side.