Remove preloads of font files that do not exist

[gszy]

No description provided.

[rust-highfive]

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[nikomatsakis]

Seems fine to me but I'm not really familiar with this stuff

r? @XAMPPRocky

[XAMPPRocky]

Yep this is fine, I already had this change in a local branch but never pushed it. We import the fonts through css.