build, wallet, doc: Remove BDB

ci/test/00_setup_env_native_valgrind.sh

@@ -8,12 +8,12 @@ export LC_ALL=C.UTF-8
 
 export CI_IMAGE_NAME_TAG="mirror.gcr.io/ubuntu:24.04"
 export CONTAINER_NAME=ci_native_valgrind
-export PACKAGES="valgrind python3-zmq libevent-dev libboost-dev libdb5.3++-dev libzmq3-dev libsqlite3-dev"
+export PACKAGES="valgrind python3-zmq libevent-dev libboost-dev libzmq3-dev libsqlite3-dev"
 export USE_VALGRIND=1
 export NO_DEPENDS=1
 export TEST_RUNNER_EXTRA="--exclude feature_init,rpc_bind,feature_bind_extra"  # feature_init excluded for now, see https://github.com/bitcoin/bitcoin/issues/30011 ; bind tests excluded for now, see https://github.com/bitcoin/bitcoin/issues/17765#issuecomment-602068547
 export GOAL="install"
 # TODO enable GUI
 export BITCOIN_CONFIG="\
- -DWITH_ZMQ=ON -DWITH_BDB=ON -DWARN_INCOMPATIBLE_BDB=OFF -DBUILD_GUI=OFF \
+ -DWITH_ZMQ=ON -DBUILD_GUI=OFF \
 "