fixes in tests and examples

tests/all/host_funcs.rs

@@ -1,8 +1,7 @@
 use anyhow::Result;
 use std::sync::atomic::{AtomicUsize, Ordering::SeqCst};
-use wasi_cap_std_sync::WasiCtxBuilder;
 use wasmtime::*;
-use wasmtime_wasi::Wasi;
+use wasmtime_wasi::{sync::WasiCtxBuilder, Wasi};
 
 #[test]
 fn async_required() {

tests/all/traps.rs

@@ -512,7 +512,7 @@ fn parse_dwarf_info() -> Result<()> {
     let mut linker = Linker::new(&store);
     wasmtime_wasi::Wasi::new(
         &store,
-        wasi_cap_std_sync::WasiCtxBuilder::new()
+        wasmtime_wasi::sync::WasiCtxBuilder::new()
             .inherit_stdio()
             .build()?,
     )