fonts-x-org: Remove Adobe’s Helvetica fonts confusing pdf.js used by …

…Firefox

This works around a Mozilla Firefox regression from 114.0 to 115.0.
Firefox was upgraded from 114.0 to 115.0 around July 5th, 2023, and
until now we had two problem reports. It’s actually a [regression][1]
[in][2] [pdf.js][3], used to display PDF files inside the browser.
Evince or other PDF viewers do not have the problem.

The problem is, that for PDF documents using Helvetica, but not
embedding the font, pdf.js chooses the X.Org font, despite Fontconfig
matching *Helvetica* to *Nimbus Sans L*:

    $ fc-match Helvetica
    n019003l.pfb: "Nimbus Sans L" "Regular"

As downgrading Firefox from 115.0.2 to 114.0 is unsupported by Mozilla
for profiles – a warning is shown, and you need to start it with
`--allow-downgrade` – remove the likely unused Helvetica fonts confusing
Firefox/pdf.js.

Resolves: #2933

[1]: https://bugzilla.mozilla.org/show_bug.cgi?id=1845551
[2]: https://bugzilla.mozilla.org/show_bug.cgi?id=1839860
[3]: https://github.com/mozilla/pdf.js/commit/53134c0c0bb2d19244dd8c31aa4e8e6d01a657e4

fonts-x-org.be0

@@ -1,6 +1,6 @@
 #!/usr/bin/env beesh
 
-# BEE_VERSION fonts-x-org-1.0-0
+# BEE_VERSION fonts-x-org-1.0-1
 
 BEE_EXTRACT_STRIP=0
 
@@ -79,6 +79,8 @@ mee_install() {
         cd $b
         start_cmd make ${BEE_MAKEFLAGS} install DESTDIR=${D} "$@"
     done
+    # Remove Helvetica fonts confusing pdf.js (used by Firefox)
+    start_cmd rm ${D}${DATADIR}/fonts/X11/*dpi/helv*
 }
 
 #mee_install_post() {