[tests] Cleanup tests that use assertOptimized()/assertUnoptimized().

test/debugger/debug/regress/regress-opt-after-debug-deopt.js

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 // Flags: --concurrent-recompilation --block-concurrent-recompilation
+// Flags: --no-always-opt
 
 if (!%IsConcurrentRecompilationSupported()) {
   print("Concurrent recompilation is disabled. Skipping this test.");
   quit();
 }
 
 Debug = debug.Debug;
 
 function listener(event, exec_state, event_data, data) {
   if (event != Debug.DebugEvent.Break) return;
@@ skipping 27 matching lines @@
 // At this point, concurrent recompilation is still being blocked.
 assertUnoptimized(f, "no sync");
 // Let concurrent recompilation proceed.
 %UnblockConcurrentRecompilation();
 // Sync with optimization thread.  But no optimized code is installed.
 assertUnoptimized(f, "sync");
 
 f();                           // Trigger break point.
 assertEquals(1, listened);
 assertNull(exception);