message: fix(runtime-c-api) Use imported symbols.
  `std::slice` is already imported. This patch then rewrites `::std::slice::` into `slice::`.
diff: @@ -165,7 +165,7 @@ pub unsafe extern "C" fn wasmer_validate(
  if wasm_bytes.is_null() {
  return false;
  }
  - let bytes: &[u8] = ::std::slice::from_raw_parts(wasm_bytes, wasm_bytes_len as usize);
  + let bytes: &[u8] = slice::from_raw_parts_mut(wasm_bytes, wasm_bytes_len as usize);
  wasmer_runtime_core::validate(bytes)
  }
  @@ -391,7 +391,7 @@ pub unsafe extern "C" fn wasmer_compile(
  wasm_bytes: *mut uint8_t,
  wasm_bytes_len: uint32_t,
  ) -> wasmer_result_t {
  - let bytes: &[u8] = ::std::slice::from_raw_parts_mut(wasm_bytes, wasm_bytes_len as usize);
  + let bytes: &[u8] = slice::from_raw_parts_mut(wasm_bytes, wasm_bytes_len as usize);
  let result = wasmer_runtime::compile(bytes);
  let new_module = match result {
  Ok(instance) => instance,
  @@ -831,7 +831,7 @@ pub unsafe extern "C" fn wasmer_instantiate(
  import_object.register(module_name, namespace);
  }
  - let bytes: &[u8] = ::std::slice::from_raw_parts_mut(wasm_bytes, wasm_bytes_len as usize);
  + let bytes: &[u8] = slice::from_raw_parts_mut(wasm_bytes, wasm_bytes_len as usize);
  let result = wasmer_runtime::instantiate(bytes, &import_object);
  let new_instance = match result {
  Ok(instance) => instance,
  