Backed out changeset ed8d5ec80203 (Bug 1533462) to revert the gfx.e10s.font-list.shared pref change.

Differential Revision: https://phabricator.services.mozilla.com/D81304

modules/libpref/init/StaticPrefList.yaml

@@ -4041,7 +4041,7 @@
 
 - name: gfx.e10s.font-list.shared
   type: bool
-  value: @IS_NIGHTLY_BUILD@
+  value: false
   mirror: once
 
 # Disable antialiasing of Ahem, for use in tests.