std: Remove deprecated/unstable num functionality

This commit removes all the old casting/generic traits from `std::num` that are
no longer in use by the standard library. This additionally removes the old
`strconv` module which has not seen much use in quite a long time. All generic
functionality has been supplanted with traits in the `num` crate and the
`strconv` module is supplanted with the [rust-strconv crate][rust-strconv].

[rust-strconv]: https://github.com/lifthrasiir/rust-strconv

This is a breaking change due to the removal of these deprecated crates, and the
alternative crates are listed above.

[breaking-change]

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libstd/collections/hash/table.rs b/src/libstd/collections/hash/table.rs
index 65ebf8515e6..3a63e2ab59c 100644
--- a/src/libstd/collections/hash/table.rs
+++ b/src/libstd/collections/hash/table.rs
@@ -17,7 +17,7 @@ use iter::{Iterator, ExactSizeIterator};
 use marker::{Copy, Send, Sync, Sized, self};
 use mem::{min_align_of, size_of};
 use mem;
-use num::wrapping::{OverflowingOps, WrappingOps};
+use num::wrapping::OverflowingOps;
 use ops::{Deref, DerefMut, Drop};
 use option::Option;
 use option::Option::{Some, None};