[turbofan] Remove deprecated --turbo-from-bytecode flag.

test/mjsunit/regress/regress-5262.js

Index: test/mjsunit/regress/regress-5262.js
diff --git a/test/mjsunit/regress/regress-5262.js b/test/mjsunit/regress/regress-5262.js
index 394bb49ca5053ee8a228205ad246e361ebfc800f..0b54b8062320ffedd19e0b13a7d869ac3bd1397c 100644
--- a/test/mjsunit/regress/regress-5262.js
+++ b/test/mjsunit/regress/regress-5262.js
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --ignition --ignition-osr --turbo-from-bytecode --allow-natives-syntax
+// Flags: --ignition --ignition-osr --allow-natives-syntax
 
 function g() { return 23 }
 function h() { return 42 }