Removing bogus check introduced in r9027.

Review URL: http://codereview.chromium.org/7781013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9060 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/jsregexp.cc

@@ -226,7 +226,6 @@ Handle<Object> RegExpImpl::AtomExec(Handle<JSRegExp> re,
   AssertNoAllocation no_heap_allocation;  // ensure vectors stay valid
 
   String* needle = String::cast(re->DataAt(JSRegExp::kAtomPatternIndex));
-  ASSERT(StringShape(needle).IsSequential());
   int needle_len = needle->length();
   ASSERT(needle->IsFlat());