diff --git a/src/build_opt.h b/src/build_opt.h
deleted file mode 100644
index c60b7a1..0000000
--- a/src/build_opt.h
+++ /dev/null
@@ -1,2 +0,0 @@
--DENABLE_HWSERIAL1
--DPIN_SERIAL1_RX=PA_10 -DPIN_SERIAL1_TX=PA_9