src: enable vector ics on arm again

The flag is no longer supported by V8 4.5, and the original issue [1] on ARMv6
no longer manifests with (at least) 4.5.103.20.

[1] See https://code.google.com/p/v8/issues/detail?id=4338

PR-URL: nodejs#2509
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

src/node.cc

@@ -3611,11 +3611,6 @@ void Init(int* argc,
   // TODO(bnoordhuis): Remove test/parallel/test-arm-math-exp-regress-1376.js
   // and this workaround when v8:4019 has been fixed and the patch back-ported.
   V8::SetFlagsFromString("--nofast_math", sizeof("--nofast_math") - 1);
-  // See https://github.com/nodejs/node/pull/2220#issuecomment-126200059
-  // and https://code.google.com/p/v8/issues/detail?id=4338
-  // TODO(targos): Remove this workaround when v8:4338 has been fixed and the
-  // patch back-ported.
-  V8::SetFlagsFromString("--novector_ics", sizeof("--novector_ics") - 1);
 #endif
 
 #if defined(NODE_V8_OPTIONS)