Revert of Steps towards unification of number bitset and range types.

src/types-inl.h

Index: src/types-inl.h
diff --git a/src/types-inl.h b/src/types-inl.h
index 60d81bdde5cd6789e4415cbfab2184cc4e74b0cd..2e7f8a36fa76325acc2dd57a9b5f84ab8ca28050 100644
--- a/src/types-inl.h
+++ b/src/types-inl.h
@@ -15,20 +15,6 @@
 
 // -----------------------------------------------------------------------------
 // TypeImpl
-
-template <class Config>
-typename TypeImpl<Config>::bitset
-TypeImpl<Config>::BitsetType::SignedSmall() {
-  return i::SmiValuesAre31Bits() ? kSigned31 : kSigned32;
-}
-
-
-template <class Config>
-typename TypeImpl<Config>::bitset
-TypeImpl<Config>::BitsetType::UnsignedSmall() {
-  return i::SmiValuesAre31Bits() ? kUnsigned30 : kUnsigned31;
-}
-
 
 template<class Config>
 TypeImpl<Config>* TypeImpl<Config>::cast(typename Config::Base* object) {
@@ -215,9 +201,6 @@
 }
 
 
-// static
-i::Isolate* ZoneTypeConfig::isolate(Zone* zone) { return zone->isolate(); }
-
 // -----------------------------------------------------------------------------
 // HeapTypeConfig
 
@@ -365,8 +348,6 @@
   structure->set(i + 1, *x);
 }
 
-// static
-i::Isolate* HeapTypeConfig::isolate(Isolate* isolate) { return isolate; }
 } }  // namespace v8::internal
 
 #endif  // V8_TYPES_INL_H_