diag_io.c: remove left-over 'rc=%d' print
diff --git a/src/diag_io.c b/src/diag_io.c
index bcae793..dab784a 100644
--- a/src/diag_io.c
+++ b/src/diag_io.c
@@ -158,7 +158,6 @@
 		rx = diag_read_msg(di);
 		if (rx) {
 			rc = diag_process_msg(di, rx);
-			printf("rc = %d\n", rc);
 			if (rc == 0)
 				return rx;
 		}