Cleanup unnecessary duplication of runtime functions.

src/runtime/runtime-maths.cc

Index: src/runtime/runtime-maths.cc
diff --git a/src/runtime/runtime-maths.cc b/src/runtime/runtime-maths.cc
index 474b46329151394717fc69a1a73c8f6f264a5dfe..23b58cfdf3aad9f60f6ad62fe484bb7b55daed6f 100644
--- a/src/runtime/runtime-maths.cc
+++ b/src/runtime/runtime-maths.cc
@@ -135,7 +135,7 @@ RUNTIME_FUNCTION(Runtime_MathFloor) {
 
 // Slow version of Math.pow.  We check for fast paths for special cases.
 // Used if VFP3 is not available.
-RUNTIME_FUNCTION(Runtime_MathPowSlow) {
+RUNTIME_FUNCTION(Runtime_MathPow) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
   isolate->counters()->math_pow()->Increment();
@@ -238,12 +238,6 @@ RUNTIME_FUNCTION(Runtime_MathFround) {
 }
 
 
-RUNTIME_FUNCTION(Runtime_MathPow) {
-  SealHandleScope shs(isolate);
-  return __RT_impl_Runtime_MathPowSlow(args, isolate);
-}
-
-
 RUNTIME_FUNCTION(Runtime_IsMinusZero) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);