Merge bitcoin/bitcoin#26691: Update secp256k1 subtree to libsecp256k1 version 0.2.0

202291722300b86f36e97de7960d40a32544c2d1 Add secp256k1_selftest call (Pieter Wuille)
3bfca788b0dae879bfc745cc52c2cb6edc49fd70 Remove explicit enabling of default modules (Pieter Wuille)
4462cb04986d77eddcfc6e8f75e04dc278a8147a Adapt to libsecp256k1 API changes (Pieter Wuille)
9d47e7b71b2805430e8c7b43816efd225a6ccd8c Squashed 'src/secp256k1/' changes from 44c2452fd3..21ffe4b22a (Pieter Wuille)

Pull request description:

  Now that libsecp256k1 has a release (https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2022-December/021271.html), update the subtree to match it.

  The changes themselves are not very impactful for Bitcoin Core, but include:
  * It's no longer needed to specify whether contexts are for signing or verification or both (all contexts support everything), so make use of that in this PR.
  * Verification operations can use the static context now, removing the need for some infrastructure in pubkey.cpp to make sure a context exists.
  * Most modules are now enabled by default, so we can drop explicit enabling for them.
  * CI improvements (in particular, MSVC and more recent MacOS)
  * Introduction of an internal int128 type, which has no effect for GCC/Clang builds, but enables 128-bit multiplication in MSVC, giving a ~20% speedup there (but still slower than GCC/Clang).
  * Release process changes (process documentation, changelog, ...).

ACKs for top commit:
  Sjors:
    ACK 202291722300b86f36e97de7960d40a32544c2d1, but 4462cb04986d77eddcfc6e8f75e04dc278a8147a could use more eyes on it.
  achow101:
    ACK 202291722300b86f36e97de7960d40a32544c2d1
  jonasnick:
    utACK 202291722300b86f36e97de7960d40a32544c2d1

Tree-SHA512: 8a9fe28852abe74abd6f96fef16a94d5a427b1d99bff4caab1699014d24698aab9b966a5364a46ed1001c07a7c1d825154ed4e6557c7decce952b77330a8616b

1 files changed, 0 insertions, 2 deletions

diff --git a/src/bitcoin-tx.cpp b/src/bitcoin-tx.cpp
index dc30383167..57ca2bbe8a 100644
--- a/src/bitcoin-tx.cpp
+++ b/src/bitcoin-tx.cpp
@@ -681,8 +681,6 @@ static void MutateTxSign(CMutableTransaction& tx, const std::string& flagStr)
 
 class Secp256k1Init
 {
-    ECCVerifyHandle globalVerifyHandle;
-
 public:
     Secp256k1Init() {
         ECC_Start();