EDK: Remove MOJO_SYSTEM_IMPL_EXPORT, system_impl_export.h, etc.

mojo/edk/embedder/process_type.h

Index: mojo/edk/embedder/process_type.h
diff --git a/mojo/edk/embedder/process_type.h b/mojo/edk/embedder/process_type.h
index c18c5f58ce104321b390eb8335e5a5cead6b59a3..4ea439e5fa500df7854fa19daa0edb7a58d858ae 100644
--- a/mojo/edk/embedder/process_type.h
+++ b/mojo/edk/embedder/process_type.h
@@ -7,8 +7,6 @@
 
 #include <ostream>
 
-#include "mojo/edk/system/system_impl_export.h"
-
 namespace mojo {
 namespace embedder {
 
@@ -25,9 +23,7 @@ enum class ProcessType {
 };
 
 // So logging macros and |DCHECK_EQ()|, etc. work.
-MOJO_SYSTEM_IMPL_EXPORT inline std::ostream& operator<<(
-    std::ostream& out,
-    ProcessType process_type) {
+inline std::ostream& operator<<(std::ostream& out, ProcessType process_type) {
   return out << static_cast<int>(process_type);
 }