Remove references to FreeSans font, which is not packaged for Guix.

--- a/game/fonts/fonts.ini	1970-01-01 01:00:01.000000000 +0100
+++ b/game/fonts/fonts.ini	2022-09-16 14:31:51.483096847 +0200
@@ -116,26 +116,6 @@
 BoldHighResPreCache=0
 BoldHighResOutline=0.02
 
-[Font_FreeSans]
-Name=Free Sans
-RegularFile=FreeSans/FreeSans.ttf
-RegularFallbackFile1=wqy-microhei/wqy-microhei.ttc
-;RegularGlyphSpacing=1.4
-;RegularStretch=1.2
-BoldFile=FreeSans/FreeSansBold.ttf
-BoldFallbackFile1=wqy-microhei/wqy-microhei.ttc
-;BoldEmbolden=0.06
-OutlineFile=FreeSans/FreeSansBold.ttf
-OutlineOutline=0.06
-;OutlineColorR=0.3
-;OutlineColorG=0.3
-;OutlineColorB=0.3
-;OutlineColorA=0.3
-BoldHighResFile=FreeSans/FreeSansBold.ttf
-BoldHighResMaxResolution=256
-BoldHighResPreCache=0
-BoldHighResOutline=0.02
-
 [Font_DejaVuSans]
 Name=DejaVu Sans
 RegularFile=DejaVu/DejaVuSans.ttf
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<div class='path'>path: <a href='/guix/log/?id=04d929570ad816793d7e0024a11314124ce87f98'>root</a>/<a href='/guix/log/tests?id=04d929570ad816793d7e0024a11314124ce87f98'>tests</a>/<a href='/guix/log/tests/guix-shell.sh?id=04d929570ad816793d7e0024a11314124ce87f98'>guix-shell.sh</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/guix-shell.sh?id=04d929570ad816793d7e0024a11314124ce87f98&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-10-30 19:12:40 +0200'>2021-10-30</span></td><td><a href='/guix/commit/tests/guix-shell.sh?id=98173af5222ab5e879e44ba9521dec5416ba8c60'>shell: Error out when an unauthorized guix.scm/manifest.scm is found.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-10-25 19:02:23 +0200'>2021-10-25</span></td><td><a href='/guix/commit/tests/guix-shell.sh?id=746584e0ca200e7bf51b139ceb36c19ea81d6ef1'>shell: By default load the local 'manifest.scm' or 'guix.scm' file.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-10-25 18:58:18 +0200'>2021-10-25</span></td><td><a href='/guix/commit/tests/guix-shell.sh?id=80edb7df6586464aa40e84e103f0045452de95db'>Add 'guix shell'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>