Clean dependencies

ldm0 · ldm0 · commit 25000595e262 · 2021-03-09T03:42:30.000+08:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -26,7 +26,6 @@ build = "build.rs"
 doctest = false
 
 [dependencies]
-once_cell = "1.5"
 libc = "0.2"
 
 [build-dependencies]
