Revert "Enabled Montserrat font"

This reverts commit ad8be07e3a.

ATTRIBUTION.md

@@ -48,4 +48,3 @@ FairEmail uses:
 * [Send](https://github.com/timvisee/send). [Mozilla Public License 2.0](https://github.com/timvisee/send/blob/master/LICENSE).
 * [DetectHtml](https://github.com/dbennett455/DetectHtml). [The MIT License](https://github.com/dbennett455/DetectHtml/blob/master/LICENSE).
 * [Liberation Sans Narrow font](https://github.com/liberationfonts/liberation-sans-narrow). Copyright (C) 1989, 1991 Free Software Foundation, Inc. [GNU General Public License version 2 with exceptions](https://fedoraproject.org/wiki/Licensing/LiberationFontLicense).
-* [Montserrat font](https://fonts.google.com/specimen/Montserrat). By Julieta Ulanovsky, Sol Matas, Juan Pablo del Peral, Jacques Le Bailly. [Open Font License](https://fonts.google.com/specimen/Montserrat/about).

app/src/main/assets/ATTRIBUTION.md

@@ -48,4 +48,3 @@ FairEmail uses:
 * [Send](https://github.com/timvisee/send). [Mozilla Public License 2.0](https://github.com/timvisee/send/blob/master/LICENSE).
 * [DetectHtml](https://github.com/dbennett455/DetectHtml). [The MIT License](https://github.com/dbennett455/DetectHtml/blob/master/LICENSE).
 * [Liberation Sans Narrow font](https://github.com/liberationfonts/liberation-sans-narrow). Copyright (C) 1989, 1991 Free Software Foundation, Inc. [GNU General Public License version 2 with exceptions](https://fedoraproject.org/wiki/Licensing/LiberationFontLicense).
-* [Montserrat font](https://fonts.google.com/specimen/Montserrat). By Julieta Ulanovsky, Sol Matas, Juan Pablo del Peral, Jacques Le Bailly. [Open Font License](https://fonts.google.com/specimen/Montserrat/about).

app/src/main/java/eu/faircode/email/StyleHelper.java

@@ -1930,7 +1930,9 @@ public class StyleHelper {
             if (all || narrow_fonts)
                 result.add(new FontDescriptor("sans narrow", "Liberation Sans Narrow (Arial Narrow)", true));
 
-            result.add(new FontDescriptor("montserrat", "Montserrat (Gotham, Proxima Nova)", true));
+            if (BuildConfig.DEBUG) {
+                result.add(new FontDescriptor("montserrat", "Montserrat", true));
+            }
 
             result.add(new FontDescriptor("comic sans", "OpenDyslexic", true));
         }