Revert of [tests] Make assertOptimized()/assertUnoptimized() great again.

test/mjsunit/concurrent-initial-prototype-change.js

Index: test/mjsunit/concurrent-initial-prototype-change.js
diff --git a/test/mjsunit/concurrent-initial-prototype-change.js b/test/mjsunit/concurrent-initial-prototype-change.js
index 8da4bcacccf0d1f9f0f67e9636fbaa69e8470ab1..6c9a9f4d56cc8944cf4bf64f89279f94e2870ac1 100644
--- a/test/mjsunit/concurrent-initial-prototype-change.js
+++ b/test/mjsunit/concurrent-initial-prototype-change.js
@@ -27,7 +27,7 @@
 
 // Flags: --allow-natives-syntax
 // Flags: --concurrent-recompilation --block-concurrent-recompilation
-// Flags: --nostress-opt --no-always-opt
+// Flags: --nostress-opt
 
 // --nostress-opt is in place because this particular optimization
 // (guaranteeing that the Array prototype chain has no elements) is
@@ -40,8 +40,6 @@
   print("Concurrent recompilation is disabled. Skipping this test.");
   quit();
 }
-
-assertFalse(isAlwaysOptimize());
 
 function f1(a, i) {
   return a[i] + 0.5;