Revert "SERVER-45599 Backport the 'assertChangeStreamEventEq' function from master"r4.0.16-rc0r4.0.16

This reverts commit 0363c1d062483022c7c1d2f2357edee3713073ca.

1 files changed, 0 insertions, 27 deletions

diff --git a/jstests/libs/change_stream_util.js b/jstests/libs/change_stream_util.js
index b52896d08b7..5cb8b933ba3 100644
--- a/jstests/libs/change_stream_util.js
+++ b/jstests/libs/change_stream_util.js
@@ -53,33 +53,6 @@ function assertInvalidateOp({cursor, opType}) {
     }
 }
 
-/**
- * Helper to check whether a change stream event matches the given expected event. Ignores the
- * resume token and clusterTime unless they are explicitly listed in the expectedEvent.
- */
-function assertChangeStreamEventEq(actualEvent, expectedEvent) {
-    const testEvent = Object.assign({}, actualEvent);
-    if (!expectedEvent.hasOwnProperty("_id")) {
-        delete testEvent._id;  // Remove the resume token, if present.
-    }
-    if (!expectedEvent.hasOwnProperty("clusterTime")) {
-        delete testEvent.clusterTime;  // Remove the cluster time, if present.
-    }
-
-    // The change stream transaction passthrough causes operations to have txnNumber and lsid
-    // values that the test doesn't expect, which can cause comparisons to fail.
-    if (!expectedEvent.hasOwnProperty("txnNumber")) {
-        delete testEvent.txnNumber;  // Remove the txnNumber, if present.
-    }
-    if (!expectedEvent.hasOwnProperty("lsid")) {
-        delete testEvent.lsid;  // Remove the lsid, if present.
-    }
-    assert.docEq(testEvent,
-                 expectedEvent,
-                 "Change did not match expected change. Expected change: " + tojson(expectedEvent) +
-                     ", Actual change: " + tojson(testEvent));
-}
-
 function ChangeStreamTest(_db, name = "ChangeStreamTest") {
     load("jstests/libs/namespace_utils.js");  // For getCollectionNameFromFullNamespace.