test: remove lief install from multiprocess job

This job doesn't run any security / symbol checks, so lief isn't needed.

Author: fanquake

ci/test/00_setup_env_i686_multiprocess.sh

@@ -15,4 +15,3 @@ export GOAL="install"
 export BITCOIN_CONFIG="--enable-debug CC='clang -m32' CXX='clang++ -m32' LDFLAGS='--rtlib=compiler-rt -lgcc_s'"
 export TEST_RUNNER_ENV="BITCOIND=bitcoin-node"
 export TEST_RUNNER_EXTRA="--nosandbox"
-export PIP_PACKAGES="lief"