Revert of [es6] ship regexp sticky flag.

src/flag-definitions.h

Index: src/flag-definitions.h
diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index 9bbad4a42988d9e354f786507f947ea5af47037c..6ccf180f6a860ccf09d7f0278ca89be034f4d8b0 100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -214,18 +214,18 @@
 
 // Features that are complete (but still behind --harmony/es-staging flag).
 #define HARMONY_STAGED(V)                                     \
+  V(harmony_regexps, "harmony regular expression extensions") \
   V(harmony_sloppy, "harmony features in sloppy mode")        \
   V(harmony_sloppy_let, "harmony let in sloppy mode")
 
 // Features that are shipping (turned on by default, but internal flag remains).
-#define HARMONY_SHIPPING(V)                                   \
-  V(harmony_default_parameters, "harmony default parameters") \
-  V(harmony_destructuring_bind, "harmony destructuring bind") \
-  V(harmony_concat_spreadable, "harmony isConcatSpreadable")  \
-  V(harmony_tolength, "harmony ToLength")                     \
-  V(harmony_tostring, "harmony toString")                     \
-  V(harmony_completion, "harmony completion value semantics") \
-  V(harmony_regexps, "harmony regular expression extensions")
+#define HARMONY_SHIPPING(V)                                     \
+  V(harmony_default_parameters, "harmony default parameters")   \
+  V(harmony_destructuring_bind, "harmony destructuring bind")   \
+  V(harmony_concat_spreadable, "harmony isConcatSpreadable")    \
+  V(harmony_tolength, "harmony ToLength")                       \
+  V(harmony_tostring, "harmony toString")                       \
+  V(harmony_completion, "harmony completion value semantics")
 
 // Once a shipping feature has proved stable in the wild, it will be dropped
 // from HARMONY_SHIPPING, all occurrences of the FLAG_ variable are removed,