[std::str] Remove the now unused not_utf8 condition.

Author: SimonSapin

src/libstd/path/windows.rs

@@ -154,7 +154,7 @@ impl GenericPathUnsafe for Path {
     ///
     /// # Failure
     ///
-    /// Raises the `str::not_utf8` condition if not valid UTF-8.
+    /// Fails if not valid UTF-8.
     #[inline]
     unsafe fn new_unchecked<T: BytesContainer>(path: T) -> Path {
         let (prefix, path) = Path::normalize_(path.container_as_str().unwrap());
@@ -168,7 +168,7 @@ impl GenericPathUnsafe for Path {
     ///
     /// # Failure
     ///
-    /// Raises the `str::not_utf8` condition if not valid UTF-8.
+    /// Fails if not valid UTF-8.
     unsafe fn set_filename_unchecked<T: BytesContainer>(&mut self, filename: T) {
         let filename = filename.container_as_str().unwrap();
         match self.sepidx_or_prefix_len() {
@@ -591,7 +591,7 @@ impl Path {
     /// # Failure
     ///
     /// Raises the `null_byte` condition if the vector contains a NUL.
-    /// Raises the `str::not_utf8` condition if invalid UTF-8.
+    /// Fails if invalid UTF-8.
     #[inline]
     pub fn new<T: BytesContainer>(path: T) -> Path {
         GenericPath::new(path)

src/libstd/str.rs

@@ -117,14 +117,6 @@ use default::Default;
 use send_str::{SendStr, SendStrOwned};
 use unstable::raw::Repr;
 
-/*
-Section: Conditions
-*/
-
-condition! {
-    pub not_utf8: (~str) -> ~str;
-}
-
 /*
 Section: Creating a string
 */