--- a/dom/base/nsDocument.cpp
+++ b/dom/base/nsDocument.cpp
@@ -1574,18 +1574,16 @@ nsDocument::~nsDocument()
         mixedContentLevel = MIXED_DISPLAY_AND_ACTIVE_CONTENT;
       } else if (hasMixedActive){
         mixedContentLevel = MIXED_ACTIVE_CONTENT;
       } else if (hasMixedDisplay) {
         mixedContentLevel = MIXED_DISPLAY_CONTENT;
       }
       Accumulate(Telemetry::MIXED_CONTENT_PAGE_LOAD, mixedContentLevel);
 
-      Accumulate(Telemetry::SCROLL_LINKED_EFFECT_FOUND, mHasScrollLinkedEffect);
-
       // record mixed object subrequest telemetry
       if (mHasMixedContentObjectSubrequest) {
         /* mixed object subrequest loaded on page*/
         Accumulate(Telemetry::MIXED_CONTENT_OBJECT_SUBREQUEST, 1);
       } else {
         /* no mixed object subrequests loaded on page*/
         Accumulate(Telemetry::MIXED_CONTENT_OBJECT_SUBREQUEST, 0);
       }

--- a/toolkit/components/telemetry/Histograms.json
+++ b/toolkit/components/telemetry/Histograms.json
@@ -10491,23 +10491,16 @@
     "alert_emails": ["cpeterson@mozilla.com"],
     "expires_in_version": "53",
     "kind": "count",
     "keyed": true,
     "releaseChannelCollection": "opt-out",
     "bug_numbers": [722110,1260065],
     "description": "Counts number of times a certain plugin has been activated."
   },
-  "SCROLL_LINKED_EFFECT_FOUND": {
-    "alert_emails": ["kgupta@mozilla.com"],
-    "bug_numbers": [1229052],
-    "expires_in_version": "50",
-    "kind": "boolean",
-    "description": "Attempt to determine prevalence of scroll-linked effects on the web."
-  },
   "SCROLL_INPUT_METHODS": {
     "alert_emails": ["botond@mozilla.com"],
     "bug_numbers": [1238137],
     "expires_in_version": "50",
     "kind": "enumerated",
     "n_values": 64,
     "description": "Count of scroll actions triggered by different input methods. See gfx/layers/apz/util/ScrollInputMethods.h for a list of possible values and their meanings."
   },