Remove a useless (and additionally incorrect) assert.

This commit was SVN r4113.

src/datatype/datatype_internal.h

@@ -389,7 +389,6 @@ convertor_init_generic( ompi_convertor_t* pConv, const dt_desc_t* datatype, int
 	pConv->stack_size = DT_STATIC_STACK_SIZE;
     }
     if( required_stack_length > pConv->stack_size ) {
-	assert( pConv->stack_size > DT_STATIC_STACK_SIZE );
 	pConv->stack_size = required_stack_length;
 	pConv->pStack     = (dt_stack_t*)malloc(sizeof(dt_stack_t) * pConv->stack_size );
     }