actually revert "use original version of secp256k1 for kevm"

Author: manveru

nix/pkgs/kevm.nix

@@ -1,19 +1,6 @@
-{ lib, stdenv, fetchFromGitHub, dockerTools, autoreconfHook, gmp5, mpfr, zlib }:
+{ lib, stdenv, fetchFromGitHub, dockerTools, autoreconfHook, gmp5, mpfr, zlib, secp256k1 }:
 let
-  libPath = lib.makeLibraryPath [ secp gmp5 mpfr zlib ];
-
-  secp = stdenv.mkDerivation {
-    name = "secp256k1";
-
-    src = fetchFromGitHub {
-      owner = "bitcoin-core";
-      repo = "secp256k1";
-      rev = "f532bdc9f77f7bbf7e93faabfbe9c483f0a9f75f";
-      sha256 = "sha256-PyqNZGER9VypH35S/aU4EBeepieI3BGXrYsJ141os24=";
-    };
-
-    nativeBuildInputs = [ autoreconfHook ];
-  };
+  libPath = lib.makeLibraryPath [ secp256k1 gmp5 mpfr zlib ];
 in stdenv.mkDerivation {
   name = "kevm";