Remove an extra "break" from a switch.

[scan-build] Unreachable code.

src/datawizard/interfaces/multiformat_interface.c

@@ -306,7 +306,6 @@ static ssize_t allocate_multiformat_buffer_on_node(void *data_interface_, uint32
 				}
 				break;
 			}
-			break;
 #endif
 		default:
 			STARPU_ASSERT(0);