Revert "save"

This reverts commit 6e9828c.

Author: ryoqun

programs/sbf/Cargo.toml

@@ -64,6 +64,10 @@ license = { workspace = true }
 edition = { workspace = true }
 
 [features]
+default = [
+    "sbf_c",
+    "sbf_rust",
+]
 sbf_c = []
 sbf_rust = []