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

test/debugger/debug/regress/regress-prepare-break-while-recompile.js

Index: test/debugger/debug/regress/regress-prepare-break-while-recompile.js
diff --git a/test/debugger/debug/regress/regress-prepare-break-while-recompile.js b/test/debugger/debug/regress/regress-prepare-break-while-recompile.js
index b93de76a650bb0e1add15b6af3c82d6dc04c6d42..49fd619a3dd39b6c8ed5be75528d5a510b6aae7f 100644
--- a/test/debugger/debug/regress/regress-prepare-break-while-recompile.js
+++ b/test/debugger/debug/regress/regress-prepare-break-while-recompile.js
@@ -26,6 +26,7 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Flags: --concurrent-recompilation --block-concurrent-recompilation
+// Flags: --no-always-opt
 
 if (!%IsConcurrentRecompilationSupported()) {
   print("Concurrent recompilation is disabled. Skipping this test.");