Remove log crate

Cargo.toml

@@ -20,7 +20,6 @@ maintenance = { status = "actively-developed" }
 
 [dependencies]
 libc = "0.2"
-log = "0.4"
 spin = { git = "https://github.com/bspeice/spin-rs.git" }
 thread-id = "3.3"
 

src/lib.rs

@@ -50,7 +50,6 @@
 //! }
 #![deny(missing_docs)]
 
-use log::warn;
 // thread_id is necessary because `std::thread::current()` panics if we have not yet
 // allocated a `thread_local!{}` it depends on.
 use thread_id;