Remove std::num::ToStrRadix from the prelude

src/libnum/bigint.rs

@@ -1400,7 +1400,7 @@ mod biguint_tests {
     use std::cmp::{Less, Equal, Greater};
     use std::from_str::FromStr;
     use std::i64;
-    use std::num::{Zero, One, FromStrRadix};
+    use std::num::{Zero, One, FromStrRadix, ToStrRadix};
     use std::num::{ToPrimitive, FromPrimitive};
     use std::rand::{task_rng};
     use std::str;
@@ -2058,7 +2058,7 @@ mod bigint_tests {
 
     use std::cmp::{Less, Equal, Greater};
     use std::i64;
-    use std::num::{Zero, One, FromStrRadix};
+    use std::num::{Zero, One, FromStrRadix, ToStrRadix};
     use std::num::{ToPrimitive, FromPrimitive};
     use std::rand::{task_rng};
     use std::u64;

src/libnum/rational.rs

@@ -333,7 +333,7 @@ impl<T: FromStrRadix + Clone + Integer + Ord>
 mod test {
 
     use super::{Ratio, Rational, BigRational};
-    use std::num::{Zero,One,FromStrRadix,FromPrimitive};
+    use std::num::{Zero, One, FromStrRadix, FromPrimitive, ToStrRadix};
     use std::from_str::FromStr;
 
     pub static _0 : Rational = Ratio { numer: 0, denom: 1};

src/libstd/num/int_macros.rs

@@ -295,8 +295,9 @@ mod tests {
     use int;
     use i32;
     use num;
-    use num::CheckedDiv;
     use num::Bitwise;
+    use num::CheckedDiv;
+    use num::ToStrRadix;
 
     #[test]
     fn test_overflows() {

src/libstd/num/uint_macros.rs

@@ -233,6 +233,7 @@ mod tests {
     use num;
     use num::CheckedDiv;
     use num::Bitwise;
+    use num::ToStrRadix;
     use u16;
 
     #[test]

src/libstd/prelude.rs

@@ -48,7 +48,7 @@ pub use iter::{Iterator, DoubleEndedIterator, RandomAccessIterator, CloneableIte
 pub use iter::{OrdIterator, MutableDoubleEndedIterator, ExactSize};
 pub use num::{Num, NumCast, CheckedAdd, CheckedSub, CheckedMul};
 pub use num::{Signed, Unsigned, Round};
-pub use num::{Primitive, Int, Float, ToStrRadix, ToPrimitive, FromPrimitive};
+pub use num::{Primitive, Int, Float, ToPrimitive, FromPrimitive};
 pub use path::{GenericPath, Path, PosixPath, WindowsPath};
 pub use ptr::RawPtr;
 pub use io::{Buffer, Writer, Reader, Seek};