cros: Change max users to be a constant

components/session_manager/core/session_manager.h

Index: components/session_manager/core/session_manager.h
diff --git a/components/session_manager/core/session_manager.h b/components/session_manager/core/session_manager.h
index 06814976f203a761bd5c634424798faedc3f6f4a..c3136cc30e9e6e2d2b56b002eb16dd96165947ad 100644
--- a/components/session_manager/core/session_manager.h
+++ b/components/session_manager/core/session_manager.h
@@ -5,8 +5,6 @@
 #ifndef COMPONENTS_SESSION_MANAGER_CORE_SESSION_MANAGER_H_
 #define COMPONENTS_SESSION_MANAGER_CORE_SESSION_MANAGER_H_
 
-#include <stdint.h>
-
 #include <vector>
 
 #include "base/macros.h"
@@ -55,9 +53,6 @@ class SESSION_EXPORT SessionManager {
   bool IsInSecondaryLoginScreen() const;
   bool IsScreenLocked() const;
 
-  // Returns the maximum number of allowed user sessions.
-  uint32_t GetMaximumNumberOfUserSessions() const;
-
   void AddObserver(SessionManagerObserver* observer);
   void RemoveObserver(SessionManagerObserver* observer);