FF70+: shield studies no longer tied to FHR (#836)

https://bugzilla.mozilla.org/1569330

user.js

@@ -246,8 +246,7 @@ user_pref("datareporting.healthreport.uploadEnabled", false);
  * [1] https://bugzilla.mozilla.org/1195552 ***/
 user_pref("datareporting.policy.dataSubmissionEnabled", false);
 /* 0342: disable Studies (see 0503)
- * [NOTE] This pref has no effect when Health Reports (0340) are disabled
- * [SETTING] Privacy & Security>Firefox Data Collection & Use>...>Allow Firefox to install and run studies ***/
+ * [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to install and run studies ***/
 user_pref("app.shield.optoutstudies.enabled", false);
 /* 0343: disable personalized Extension Recommendations in about:addons and AMO [FF65+]
  * [NOTE] This pref has no effect when Health Reports (0340) are disabled