Bug 1696698 - Remove reader.parse-on-load.force-enabled pref. r=mconley

Differential Revision: https://phabricator.services.mozilla.com/D108353

modules/libpref/init/all.js

@@ -4258,10 +4258,6 @@ pref("reader.parse-on-load.enabled", true);
 // because it'd slow things down too much
 pref("reader.parse-node-limit", 3000);
 
-// Force-enables reader mode parsing, even on low-memory platforms, where it
-// is disabled by default.
-pref("reader.parse-on-load.force-enabled", false);
-
 // Whether we include full URLs in browser console errors. This is disabled
 // by default because some platforms will persist these, leading to privacy issues.
 pref("reader.errors.includeURLs", false);

toolkit/components/reader/Readerable.js

@@ -21,7 +21,7 @@ function isNodeVisible(node) {
 
 var Readerable = {
   get isEnabledForParseOnLoad() {
-    return this.isEnabled || this.isForceEnabled;
+    return this.isEnabled;
   },
 
   /**
@@ -84,9 +84,3 @@ XPCOMUtils.defineLazyPreferenceGetter(
   "reader.parse-on-load.enabled",
   true
 );
-XPCOMUtils.defineLazyPreferenceGetter(
-  Readerable,
-  "isForceEnabled",
-  "reader.parse-on-load.force-enabled",
-  false
-);