Revert of [regexp] Port RegExpCompile and RegExpToString

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index e9673076ede0982589a59b98e5602a094c311740..de4441f24c18a71ec4af1c974b22656a7f88010e 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1636,12 +1636,6 @@
                           Builtins::kRegExpPrototypeStickyGetter, false);
       SimpleInstallGetter(proto, factory->unicode_string(),
                           Builtins::kRegExpPrototypeUnicodeGetter, false);
-
-      SimpleInstallFunction(proto, "compile", Builtins::kRegExpPrototypeCompile,
-                            2, false, DONT_ENUM);
-      SimpleInstallFunction(proto, factory->toString_string(),
-                            Builtins::kRegExpPrototypeToString, 0, false,
-                            DONT_ENUM);
     }
 
     {