Backed out changeset 46ec6a8d9505 (bug 1854162) for causing wrench bustages.

taskcluster/scripts/misc/wrench-macos-build.sh

@@ -23,7 +23,6 @@ mkdir -p "${UPLOAD_DIR}"
 
 # Do a cross-build without the `headless` feature
 pushd "${GECKO_PATH}/gfx/wr/wrench"
-python3 -m pip install -r ../ci-scripts/requirements.txt
 cargo build --release -vv --frozen --target=${TARGET_TRIPLE}
 # Package up the resulting wrench binary
 cd "../target/${TARGET_TRIPLE}"