removed prototypes for shared memory register/unregister -- not used

This commit was SVN r1384.

src/mca/mpool/sm/mpool_sm.h

@@ -49,16 +49,6 @@ void* mca_mpool_sm_realloc(void* addr, size_t size);
   */
 void mca_mpool_sm_free(void *);
                                                                                                                          
-/**
-  * register memory
-  */
-void mca_mpool_sm_register(void * addr, size_t size, void* user);
-                                                                                                                         
-/**
-  * deregister memory
-  */
-void mca_mpool_sm_deregister(void * addr);
-
 /**
   * component open/close/init function 
   */