Revert "Add current rss and embedder name to Observatory"

runtime/vm/os_win.cc

Index: runtime/vm/os_win.cc
diff --git a/runtime/vm/os_win.cc b/runtime/vm/os_win.cc
index 68f77f6e4517384dbb90c83295223cd45654ce8b..aa7e774713c480c8d5e710ceabcc9e882200ed99 100644
--- a/runtime/vm/os_win.cc
+++ b/runtime/vm/os_win.cc
@@ -206,6 +206,12 @@ int OS::NumberOfAvailableProcessors() {
   return info.dwNumberOfProcessors;
 }
 
+uintptr_t OS::MaxRSS() {
+  PROCESS_MEMORY_COUNTERS pmc;
+  GetProcessMemoryInfo(GetCurrentProcess(), &pmc, sizeof(pmc));
+  return pmc.PeakWorkingSetSize;
+}
+
 void OS::Sleep(int64_t millis) {
   ::Sleep(millis);
 }