ci: skip running the Linux test-security-check target for now

The CI environment is a moving target, and these tests are somewhat
fragile, so for now, disable them.

Author: fanquake

ci/test/00_setup_env_native_multiprocess.sh

@@ -13,5 +13,4 @@ export DEP_OPTS="DEBUG=1 MULTIPROCESS=1"
 export GOAL="install"
 export BITCOIN_CONFIG="--enable-debug CC=clang CXX=clang++"  # Use clang to avoid OOM
 export TEST_RUNNER_ENV="BITCOIND=bitcoin-node"
-export RUN_SECURITY_TESTS="true"
 export PIP_PACKAGES="lief"