ci: remove -Wno-error=deprecated-declarations from ASAN

This is no-longer needed after the changes to leveldb.

ci/test/00_setup_env_native_asan.sh

@@ -29,7 +29,7 @@ export BITCOIN_CONFIG="\
  -DCMAKE_C_COMPILER=clang-${APT_LLVM_V} \
  -DCMAKE_CXX_COMPILER=clang++-${APT_LLVM_V} \
  -DCMAKE_C_FLAGS='-ftrivial-auto-var-init=pattern' \
- -DCMAKE_CXX_FLAGS='-ftrivial-auto-var-init=pattern -Wno-error=deprecated-declarations' \
+ -DCMAKE_CXX_FLAGS='-ftrivial-auto-var-init=pattern' \
  -DAPPEND_CXXFLAGS='-std=c++23' \
  -DAPPEND_CPPFLAGS='-DARENA_DEBUG -DDEBUG_LOCKORDER' \
 "