diff --git a/tests/UnifiedSpecTests/UnifiedTestRunner.php b/tests/UnifiedSpecTests/UnifiedTestRunner.php
index 40f2c3046..94d318120 100644
--- a/tests/UnifiedSpecTests/UnifiedTestRunner.php
+++ b/tests/UnifiedSpecTests/UnifiedTestRunner.php
@@ -72,9 +72,6 @@ final class UnifiedTestRunner
     /** @var EntityMap */
     private $entityMap;
 
-    /** @var callable(EntityMap):void */
-    private $entityMapObserver;
-
     /** @var FailPointObserver */
     private $failPointObserver;
 
@@ -113,31 +110,10 @@ public function run(UnifiedTestCase $test): void
 
             throw $e;
         } finally {
-            /* An EntityMap observer should be invoked irrespective of the test
-             * succeeding or failing. Since the callable itself might throw, we
-             * need to ensure doTearDown() will still be called. */
-            try {
-                if (isset($this->entityMapObserver, $this->entityMap)) {
-                    call_user_func($this->entityMapObserver, $this->entityMap);
-                }
-            } finally {
-                $this->doTearDown($hasFailed);
-            }
+            $this->doTearDown($hasFailed);
         }
     }
 
-    /**
-     * Defines a callable to receive the EntityMap after each test.
-     *
-     * This function is primarily used by the Atlas testing workload executor.
-     *
-     * @param callable(EntityMap):void $entityMapObserver
-     */
-    public function setEntityMapObserver(callable $entityMapObserver): void
-    {
-        $this->entityMapObserver = $entityMapObserver;
-    }
-
     private function doSetUp(): void
     {
         /* The transactions spec advises calling killAllSessions only at the
@@ -193,13 +169,6 @@ private function doTestCase(stdClass $test, string $schemaVersion, ?array $runOn
 
         $context = $this->createContext();
 
-        /* If an EntityMap observer has been configured, assign the Context's
-         * EntityMap to a class property so it can later be accessed from run(),
-         * irrespective of whether this test succeeds or fails. */
-        if (isset($this->entityMapObserver)) {
-            $this->entityMap = $context->getEntityMap();
-        }
-
         if (isset($createEntities)) {
             $context->createEntities($createEntities);
         }