markdown-math: remove font variants

[aeschli]

Our builds contain many KaTeX fonts in 3 different formats. In order to keep the number of files in our build small, can we remove some of the formats? (e.g. just use woff)

| +---markdown-math
| | +---notebook-out
| | | | katex.js
| | | | katex.min.css
| | | |
| | | ---fonts
| | | KaTeX_AMS-Regular.ttf
| | | KaTeX_AMS-Regular.woff
| | | KaTeX_AMS-Regular.woff2
| | | KaTeX_Caligraphic-Bold.ttf
| | | KaTeX_Caligraphic-Bold.woff
| | | KaTeX_Caligraphic-Bold.woff2
| | | KaTeX_Caligraphic-Regular.ttf
| | | KaTeX_Caligraphic-Regular.woff
| | | KaTeX_Caligraphic-Regular.woff2
| | | KaTeX_Fraktur-Bold.ttf
| | | KaTeX_Fraktur-Bold.woff
| | | KaTeX_Fraktur-Bold.woff2
| | | KaTeX_Fraktur-Regular.ttf
| | | KaTeX_Fraktur-Regular.woff
| | | KaTeX_Fraktur-Regular.woff2
| | | KaTeX_Main-Bold.ttf
| | | KaTeX_Main-Bold.woff
| | | KaTeX_Main-Bold.woff2
| | | KaTeX_Main-BoldItalic.ttf
| | | KaTeX_Main-BoldItalic.woff
| | | KaTeX_Main-BoldItalic.woff2
| | | KaTeX_Main-Italic.ttf
| | | KaTeX_Main-Italic.woff
| | | KaTeX_Main-Italic.woff2
| | | KaTeX_Main-Regular.ttf
| | | KaTeX_Main-Regular.woff
| | | KaTeX_Main-Regular.woff2
| | | KaTeX_Math-BoldItalic.ttf
| | | KaTeX_Math-BoldItalic.woff
| | | KaTeX_Math-BoldItalic.woff2
| | | KaTeX_Math-Italic.ttf
| | | KaTeX_Math-Italic.woff
| | | KaTeX_Math-Italic.woff2
| | | KaTeX_SansSerif-Bold.ttf
| | | KaTeX_SansSerif-Bold.woff
| | | KaTeX_SansSerif-Bold.woff2
| | | KaTeX_SansSerif-Italic.ttf
| | | KaTeX_SansSerif-Italic.woff
| | | KaTeX_SansSerif-Italic.woff2
| | | KaTeX_SansSerif-Regular.ttf
| | | KaTeX_SansSerif-Regular.woff
| | | KaTeX_SansSerif-Regular.woff2
| | | KaTeX_Script-Regular.ttf
| | | KaTeX_Script-Regular.woff
| | | KaTeX_Script-Regular.woff2
| | | KaTeX_Size1-Regular.ttf
| | | KaTeX_Size1-Regular.woff
| | | KaTeX_Size1-Regular.woff2
| | | KaTeX_Size2-Regular.ttf
| | | KaTeX_Size2-Regular.woff
| | | KaTeX_Size2-Regular.woff2
| | | KaTeX_Size3-Regular.ttf
| | | KaTeX_Size3-Regular.woff
| | | KaTeX_Size3-Regular.woff2
| | | KaTeX_Size4-Regular.ttf
| | | KaTeX_Size4-Regular.woff
| | | KaTeX_Size4-Regular.woff2
| | | KaTeX_Typewriter-Regular.ttf
| | | KaTeX_Typewriter-Regular.woff
| | | KaTeX_Typewriter-Regular.woff2
| | |
|

[mjbvz]

Looks like woff2 is widely supported now too: https://caniuse.com/woff2

These are about half the size of the ttf files too