Bug 1645725 - Remove chatsetMenu.properties l10n resource from GeckoView. r=geckoview-reviewers,Pike,snorp

`charsetMenu.properies` was for "Text Encoding" menu in Fennec (bug 611580).
EN was off as default, but some language such JA turned on this menu.

Since Fennec is gone, it is unnecessary now, so let's remove this resource.

Differential Revision: https://phabricator.services.mozilla.com/D79634

mobile/android/locales/filter.py

@@ -21,7 +21,6 @@ def test(mod, path, entity=None):
         # keep this file list in sync with jar.mn
         if path in (
             "chrome/global/aboutReader.properties",
-            "chrome/global/charsetMenu.properties",
             "chrome/global/commonDialogs.properties",
             "chrome/global/intl.properties",
             "chrome/global/intl.css",

mobile/android/locales/jar.mn

@@ -37,7 +37,6 @@
 # keep this file list in sync with l10n.toml and filter.py
 relativesrcdir toolkit/locales:
   locale/@AB_CD@/browser/overrides/aboutReader.properties          (%chrome/global/aboutReader.properties)
-  locale/@AB_CD@/browser/overrides/charsetMenu.properties          (%chrome/global/charsetMenu.properties)
   locale/@AB_CD@/browser/overrides/commonDialogs.properties        (%chrome/global/commonDialogs.properties)
   locale/@AB_CD@/browser/overrides/intl.properties                 (%chrome/global/intl.properties)
   locale/@AB_CD@/browser/overrides/intl.css                        (%chrome/global/intl.css)

mobile/locales/filter.py

@@ -21,7 +21,6 @@ def test(mod, path, entity=None):
         # keep this file list in sync with jar.mn
         if path in (
             "chrome/global/aboutReader.properties",
-            "chrome/global/charsetMenu.properties",
             "chrome/global/commonDialogs.properties",
             "chrome/global/intl.properties",
             "chrome/global/intl.css",