Merge rust-bitcoin/rust-bitcoin#1034: README: remove stale info about upcoming edition change

29cfdc8 README: remove stale info about upcoming edition change (Dawid Ciężarkiewicz)

Pull request description:

  It is done.

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Tree-SHA512: fc5b694229e4a3ebcc8f25cd4d73b65cb798d441934b2e2b473c0811367bb9c5bd6cfae9e5b68b072e3c6320f386ab54138b8589a57fc0816702474ab6de06f8

Author: ChallengeDev210

README.md

@@ -18,12 +18,6 @@
   </p>
 </div>
 
-**Heads up for contributors: upcoming edition change**
-
-We're currently preparing to bump MSRV and **change the edition to 2018**.
-To minimize the churn we recommend you to submit your local WIP changes ASAP.
-There will be a lot of rebasing after the edition change.
-
 [Documentation](https://docs.rs/bitcoin/)
 
 Supports (or should support)