Remove Stdio hack

src/common/stdio.rs

@@ -1,6 +1,6 @@
 use libc;
 use std::fs::File;
-use std::io::{Read, Write};
+use std::io::{Read};
 use std::os::unix::io::FromRawFd;
 
 // A struct to hold the references to the base stdout and the captured one

src/emtests/_common.rs

@@ -16,9 +16,6 @@ macro_rules! assert_emscripten_output {
             isa: get_isa(),
         });
         let mut result_object = instantiate(wasm_bytes.to_vec(), import_object, options).expect("Not compiled properly");
-        // We use this as a way of hacking the stdout and remove the data that should be flushed
-        (StdioCapturer::new()).end();
-
         let capturer = StdioCapturer::new();
         start_instance(&result_object.module, &mut result_object.instance, $name, $args).unwrap();
         let output = capturer.end().0;