build: keep dev FFI environment out of binary build

ober

7d74ebf72eef0cab8d36e0ba9a8e4ca5a2a3f022

diff --git a/Makefile b/Makefile
index 9525f7b..ea37cae 100644
--- a/Makefile
+++ b/Makefile
@@ -354,7 +354,6 @@ local-eval: build
 binary: ensure-jerboa-tools gen native-rs
 	rm -rf lib/std
 	rm -rf lib/jerboa
-	$(JCODE_DEV_NATIVE_ENV) \
 	$(JERBUILD) build --config .jerbuild --os-libs "$(JCODE_OS_LIBS)"
 	cp -R "$(JH)/lib/std" lib/
 	cp -R "$(JH)/lib/jerboa" lib/