c-api: Update reexport of wasmtime crate crate (#7112)

* c-api: Remove reexport of wasmtime crate

This is a follow-up to #6765 to remove this reexport since it was
originally added to use both the C API and the `wasmtime` crate in the
same downstream crate, but this should be possible through Cargo with:

    [dependencies]
    wasmtime = "13"
    wasmtime-c-api = { version = "13", package = "wasmtime-c-api" }

and that way `wasmtime::*` is available as well as `wasmtime_c_api::*`

* Add `pub use wasmtime;`

Author: alexcrichton

crates/c-api/src/lib.rs

@@ -11,7 +11,7 @@
 
 #![allow(non_snake_case, non_camel_case_types, non_upper_case_globals)]
 
-pub use wasmtime::*;
+pub use wasmtime;
 
 mod config;
 mod engine;