Remove D3 plugins submodule

[#67647840]
Remove science.js submodule

[#67647840]
Remove mathjax submodule

[#67647840]
Remove dsp.js submodule

[#67647840]
Remove sizzle submodule

[#67647840]
Remove RequireJS and domReady submodules

[#67647840]

RequireJS is provided as NPM module.
Fix license.md dependencies index numbers

[#67647840]