setup: remove brew (#37669)

tools/setup_dependencies.sh

@@ -113,24 +113,12 @@ function install_python_deps() {
   source .venv/bin/activate
 }
 
-function install_macos_deps() {
-  if ! command -v brew > /dev/null 2>&1; then
-    echo "homebrew not found, skipping macOS system dependency install"
-    return 0
-  fi
-
-  if ! command -v cmake > /dev/null 2>&1; then
-    brew install cmake
-  fi
-}
-
 # --- Main ---
 
 if [[ "$OSTYPE" == "linux-gnu"* ]]; then
   install_ubuntu_deps
   echo "[ ] installed system dependencies t=$SECONDS"
 elif [[ "$OSTYPE" == "darwin"* ]]; then
-  install_macos_deps
   if [[ $SHELL == "/bin/zsh" ]]; then
     RC_FILE="$HOME/.zshrc"
   elif [[ $SHELL == "/bin/bash" ]]; then