remove submodule and apply theme

html-only/static/font/GUST e-foundry License.txt

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+This is a preliminary version (2006-09-30), barring acceptance from
+the LaTeX Project Team and other feedback, of the GUST Font License.
+(GUST is the Polish TeX Users Group, http://www.gust.org.pl)
+
+For the most recent version of this license see
+http://www.gust.org.pl/fonts/licenses/GUST-FONT-LICENSE.txt
+or
+http://tug.org/fonts/licenses/GUST-FONT-LICENSE.txt
+
+This work may be distributed and/or modified under the conditions
+of the LaTeX Project Public License, either version 1.3c of this
+license or (at your option) any later version.
+
+Please also observe the following clause:
+1) it is requested, but not legally required, that derived works be
+   distributed only after changing the names of the fonts comprising this
+   work and given in an accompanying "manifest", and that the
+   files comprising the Work, as listed in the manifest, also be given
+   new names. Any exceptions to this request are also given in the
+   manifest.
+
+   We recommend the manifest be given in a separate file named
+   MANIFEST-<fontid>.txt, where <fontid> is some unique identification
+   of the font family. If a separate "readme" file accompanies the Work,
+   we recommend a name of the form README-<fontid>.txt.
+
+The latest version of the LaTeX Project Public License is in
+http://www.latex-project.org/lppl.txt and version 1.3c or later
+is part of all distributions of LaTeX version 2006/05/20 or later.