EDK: Remove MOJO_SYSTEM_IMPL_EXPORT, system_impl_export.h, etc.

mojo/edk/system/data_pipe_consumer_dispatcher.h

Index: mojo/edk/system/data_pipe_consumer_dispatcher.h
diff --git a/mojo/edk/system/data_pipe_consumer_dispatcher.h b/mojo/edk/system/data_pipe_consumer_dispatcher.h
index 29df228efc0c581cf097950b257ba5ef0b8ca47f..8a541a84ab9d4a2fb6c308c311ca20b617834b4d 100644
--- a/mojo/edk/system/data_pipe_consumer_dispatcher.h
+++ b/mojo/edk/system/data_pipe_consumer_dispatcher.h
@@ -7,7 +7,6 @@
 
 #include "base/memory/ref_counted.h"
 #include "mojo/edk/system/dispatcher.h"
-#include "mojo/edk/system/system_impl_export.h"
 #include "mojo/public/cpp/system/macros.h"
 
 namespace mojo {
@@ -18,8 +17,7 @@ class DataPipe;
 // This is the |Dispatcher| implementation for the consumer handle for data
 // pipes (created by the Mojo primitive |MojoCreateDataPipe()|). This class is
 // thread-safe.
-class MOJO_SYSTEM_IMPL_EXPORT DataPipeConsumerDispatcher final
-    : public Dispatcher {
+class DataPipeConsumerDispatcher final : public Dispatcher {
  public:
   static scoped_refptr<DataPipeConsumerDispatcher> Create() {
     return make_scoped_refptr(new DataPipeConsumerDispatcher());