Remove unused variable (Coverty fix 175).

This commit was SVN r19192.

ompi/mca/coll/basic/coll_basic_gatherv.c

@@ -114,14 +114,13 @@ mca_coll_basic_gatherv_inter(void *sbuf, int scount,
                              struct ompi_communicator_t *comm,
                              mca_coll_base_module_t *module)
 {
-    int i, rank, size, err;
+    int i, size, err;
     char *ptmp;
     ptrdiff_t lb, extent;
     mca_coll_basic_module_t *basic_module = (mca_coll_basic_module_t*) module;
     ompi_request_t **reqs = basic_module->mccb_reqs;
 
     size = ompi_comm_remote_size(comm);
-    rank = ompi_comm_rank(comm);
 
     /* If not root, receive data.  Note that we will only get here if
      * scount > 0 or rank == root. */