compile with cpu

Author: Yancey0623

paddle/fluid/framework/executor.h

@@ -44,14 +44,12 @@ class Executor {
 
   explicit Executor(const platform::Place& place);
 
-#ifdef PADDLE_WITH_DISTRIBUTE
   /*
-   * Sending signal to pserver to mark current trainer completed.
+   * Close this Executor.
+   * Calling this method will send complete messages to all pserver instances.
    */
   void Close();
 
-#endif
-
   /* @Brief
    * Runtime evaluation of the given ProgramDesc under certain Scope
    *