python3Packages.thinc: 7.2.0 -> 7.3.1

Largest changes:

- Add Mish activation.
- Add experimental support for the RAdam optimizer.
- Add experimental support for lookahead to the optimizer.
- Add experimental support for LARS to the optimizer.

Changelog:
https://github.com/explosion/thinc/releases/tag/v7.3.0

pkgs/development/python-modules/thinc/default.nix

@@ -28,11 +28,11 @@
 
 buildPythonPackage rec {
   pname = "thinc";
-  version = "7.2.0";
+  version = "7.3.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "808caccafab95aa74c21695248b26279792cd7d07d94fd97f181020f318f024a";
+    sha256 = "1f9bg7iyhwnk8jfras8d4wzq0ypn5na0bdbwkl7y2mr06yrdd0ff";
   };
 
   buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
@@ -65,11 +65,6 @@ buildPythonPackage rec {
     pytest
   ];
 
-  prePatch = ''
-    substituteInPlace setup.py \
-      --replace "plac>=0.9.6,<1.0.0" "plac>=0.9.6"
-  '';
-
   # Cannot find cython modules.
   doCheck = false;