remove re-export of cortex-m-semihosting

the functionality is not fundamental and can be easily added to a program by
directly depending on cortex-m-semihosting

Author: japaric

Cargo.toml

@@ -11,5 +11,4 @@ version = "0.3.0"
 
 [dependencies]
 aligned = "0.1.1"
-cortex-m-semihosting = "0.1.3"
 volatile-register = "0.2.0"

src/lib.rs

@@ -15,7 +15,6 @@
 #![no_std]
 
 extern crate aligned;
-pub extern crate cortex_m_semihosting as semihosting;
 extern crate volatile_register;
 
 #[macro_use]

src/macros.rs

@@ -1,51 +1,3 @@
-/// Macro for printing to the **host's** standard stderr
-#[macro_export]
-macro_rules! ehprint {
-    ($s:expr) => {
-        $crate::semihosting::io::ewrite_str($s);
-    };
-    ($($arg:tt)*) => {
-        $crate::semihosting::io::ewrite_fmt(format_args!($($arg)*));
-    };
-}
-
-/// Macro for printing to the **host's** standard error, with a newline.
-#[macro_export]
-macro_rules! ehprintln {
-    () => (ehprint!("\n"));
-    ($fmt:expr) => {
-        ehprint!(concat!($fmt, "\n"));
-    };
-    ($fmt:expr, $($arg:tt)*) => {
-        ehprint!(concat!($fmt, "\n"), $($arg)*);
-    };
-}
-
-/// Macro for printing to the **host's** standard output
-#[macro_export]
-macro_rules! hprint {
-    ($s:expr) => {
-        $crate::semihosting::io::write_str($s);
-    };
-    ($($arg:tt)*) => {
-        $crate::semihosting::io::write_fmt(format_args!($($arg)*));
-    };
-}
-
-/// Macro for printing to the **host's** standard output, with a newline.
-#[macro_export]
-macro_rules! hprintln {
-    () => {
-        hprint!("\n");
-    };
-    ($fmt:expr) => {
-        hprint!(concat!($fmt, "\n"));
-    };
-    ($fmt:expr, $($arg:tt)*) => {
-        hprint!(concat!($fmt, "\n"), $($arg)*);
-    };
-}
-
 /// Macro for sending a formatted string through an ITM channel
 #[macro_export]
 macro_rules! iprint {