Remove prematurely added dependencies from preparser.

Also remove some dead code.

Review URL: http://codereview.chromium.org/7334008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8615 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/SConscript

@@ -231,15 +231,11 @@ SOURCES = {
 PREPARSER_SOURCES = {
   'all': Split("""
     allocation.cc
-    bignum.cc
-    cached-powers.cc
-    conversions.cc
     hashmap.cc
     preparse-data.cc
     preparser.cc
     preparser-api.cc
     scanner-base.cc
-    strtod.cc
     token.cc
     unicode.cc
     utils.cc

src/conversions.cc

@@ -430,24 +430,4 @@ char* DoubleToRadixCString(double value, int radix) {
   return builder.Finalize();
 }
 
-
-static Mutex* dtoa_lock_one = OS::CreateMutex();
-static Mutex* dtoa_lock_zero = OS::CreateMutex();
-
-
 } }  // namespace v8::internal
-
-
-extern "C" {
-void ACQUIRE_DTOA_LOCK(int n) {
-  ASSERT(n == 0 || n == 1);
-  (n == 0 ? v8::internal::dtoa_lock_zero : v8::internal::dtoa_lock_one)->Lock();
-}
-
-
-void FREE_DTOA_LOCK(int n) {
-  ASSERT(n == 0 || n == 1);
-  (n == 0 ? v8::internal::dtoa_lock_zero : v8::internal::dtoa_lock_one)->
-      Unlock();
-}
-}