Windows: get rid of most NO_IMPL related macros

src/platform_win32.h

@@ -3,27 +3,13 @@
 
 #include <windows.h>
 
-#define NO_IMPL(type, name, rv, args...)                                    \
-          type  name ( args ) {                                             \
-            HandleScope scope;                                              \
-            fprintf(stderr, "Not implemented: "#type" "#name"("#args")\n"); \
-            return rv;                                                      \
-          }
-
-#define RET_V8INT(value) \
-          scope.Close(Integer::New(value));
-#define RET_V8UNDEFINED \
-          Undefined()
-#define RET_V8TRUE \
-          True()
-#define RET_V8FALSE \
-          False()
 
-#define NO_IMPL_MSG(name...) \
-          fprintf(stderr, "Not implemented: %s\n", #name);
 
 namespace node {
 
+#define NO_IMPL_MSG(name...) \
+    fprintf(stderr, "Not implemented: %s\n", #name);
+
 void winapi_perror(const char* prefix);
 
 }