remove nonnull export and remove unused comment

Author: colmazia

packages/vm/src/compile.rs

@@ -107,8 +107,6 @@ fn inject_memory(module: Module) -> Result<Module, Error> {
 }
 
 fn inject_stack_height(module: Module) -> Result<Module, Error> {
-    // pwasm_utils::stack_height::inject_limiter(module, MAX_STACK_HEIGHT)
-    //     .map_err(|_| Error::StackHeightInjectionError)
     wasm_instrument::inject_stack_limiter(module, MAX_STACK_HEIGHT)
         .map_err(|_| Error::StackHeightInjectionError)
 }

packages/vm/src/lib.rs

@@ -10,4 +10,3 @@ pub mod vm;
 pub use calls::run;
 pub use compile::compile;
 pub use error::Error;
-pub use std::ptr::NonNull;