Remove Rust dependency and orjson source rebuild - not needed with libexec wrapper fix

Author: sbryngelson

packaging/homebrew/mfc.rb

@@ -13,7 +13,6 @@ class Mfc < Formula
 
   depends_on "cmake" => :build
   depends_on "gcc" => :build
-  depends_on "rust" => :build
 
   depends_on "boost"
   depends_on "fftw"
@@ -34,14 +33,10 @@ def install
 
     # Install MFC Python package and dependencies into venv
     # Use editable install (-e) to avoid RECORD file issues when venv is symlinked at runtime
-    # Dependencies will use pre-built wheels from PyPI (no bottling needed)
+    # Dependencies will use pre-built wheels from PyPI
     # Keep toolchain in buildpath for now - mfc.sh needs it there
     system venv/"bin/pip", "install", "-e", buildpath/"toolchain"
 
-    # Rebuild orjson from source with headerpad to enable bottle relocation
-    ENV["RUSTFLAGS"] = "-C link-arg=-Wl,-headerpad_max_install_names"
-    system venv/"bin/pip", "install", "--no-binary", ":all:", "--force-reinstall", "--no-deps", "orjson"
-
     # Create symlink so mfc.sh uses our pre-installed venv
     mkdir_p "build"
     ln_sf venv, "build/venv"