Remove many features when building product mode

runtime/vm/service.cc

Index: runtime/vm/service.cc
diff --git a/runtime/vm/service.cc b/runtime/vm/service.cc
index 595083f8ae0f427d6a09720575a3456d5d460f33..04b2f98f01eed9febdc9d12e6ce37e35da45729e 100644
--- a/runtime/vm/service.cc
+++ b/runtime/vm/service.cc
@@ -51,6 +51,7 @@ DEFINE_FLAG(bool, warn_on_pause_with_no_debugger, false,
             "Print a message when an isolate is paused but there is no "
             "debugger attached.");
 
+#ifndef PRODUCT
 // The name of this of this vm as reported by the VM service protocol.
 static char* vm_name = NULL;
 
@@ -3958,5 +3959,6 @@ const ServiceMethodDescriptor* FindMethod(const char* method_name) {
   return NULL;
 }
 
+#endif  // !PRODUCT
 
 }  // namespace dart