ci: remove unnecessary variables and functions (#22150)

ci/before_script.sh

@@ -3,22 +3,34 @@
 set -e
 set -o pipefail
 
-CI_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-# shellcheck source-path=SCRIPTDIR
-source "${CI_DIR}/common/build.sh"
-
 # Test some of the configuration variables.
 if [[ -n "${GCOV}" ]] && [[ ! $(type -P "${GCOV}") ]]; then
   echo "\$GCOV: '${GCOV}' is not executable."
   exit 1
 fi
-if [[ -n "${LLVM_SYMBOLIZER}" ]] && [[ ! $(type -P "${LLVM_SYMBOLIZER}") ]]; then
-  echo "\$LLVM_SYMBOLIZER: '${LLVM_SYMBOLIZER}' is not executable."
-  exit 1
+
+if test "${FUNCTIONALTEST}" = "functionaltest-lua" ; then
+  DEPS_CMAKE_FLAGS="${DEPS_CMAKE_FLAGS} -DUSE_BUNDLED_LUA=ON"
 fi
 
-# Compile dependencies.
-build_deps
+mkdir -p "${DEPS_BUILD_DIR}"
+
+# Use cached dependencies if $CACHE_MARKER exists.
+if test -f "${CACHE_MARKER}"; then
+  echo "Using third-party dependencies from cache."
+  cp -a "${CACHE_NVIM_DEPS_DIR}"/. "${DEPS_BUILD_DIR}"
+fi
+
+# Even if we're using cached dependencies, run CMake and make to
+# update CMake configuration and update to newer deps versions.
+cd "${DEPS_BUILD_DIR}"
+echo "Configuring with '${DEPS_CMAKE_FLAGS}'."
+# shellcheck disable=SC2086
+cmake -G Ninja ${DEPS_CMAKE_FLAGS} "${CI_BUILD_DIR}/cmake.deps/"
+
+ninja || exit 1
+
+cd "${CI_BUILD_DIR}"
 
 # Install cluacov for Lua coverage.
 if [[ "$USE_LUACOV" == 1 ]]; then