updater: bundle the pyserial-free zipapp (commaai/openpilot#38925); drop the pyserial bootstrap

launch_chffrplus.sh

@@ -80,40 +80,6 @@ function launch {
   ln -sfn teleoprtc_repo/teleoprtc teleoprtc
   ln -sfn tinygrad_repo/tinygrad tinygrad
 
-  # The bundled AGNOS updater zipapp imports pyserial (tici/lpa.py inside the
-  # archive). agnos_init may invoke that updater, so make sure serial is
-  # importable first. Offline wheel in third_party/wheels is tried before the
-  # PyPI fallback. Installs into $DIR/pydeps without touching the device venv.
-  if [ -f /AGNOS ]; then
-    # Put pydeps on PYTHONPATH unconditionally BEFORE the import test and the
-    # AGNOS updater run. Previously the export was gated on an import test that
-    # ran without pydeps on PYTHONPATH, so it never fired even when the wheel
-    # install succeeded, and the updater still crashed on `import serial`.
-    PYDEPS="${PYDEPS:-$DIR/pydeps}"
-    mkdir -p "$PYDEPS"
-    case ":$PYTHONPATH:" in
-      *":$PYDEPS:"*) ;;
-      *) export PYTHONPATH="$PYDEPS:$PYTHONPATH" ;;
-    esac
-    if ! python3 -c "import serial" > /dev/null 2>&1; then
-      echo "[bootstrap] pyserial missing before AGNOS check; installing..."
-      wheel_dir="$DIR/third_party/wheels"
-      if [ -d "$wheel_dir" ] && ls "$wheel_dir"/pyserial*.whl > /dev/null 2>&1; then
-        echo "[bootstrap] pyserial: installing from local wheel..."
-        python3 -m pip install --no-index --no-deps --find-links "$wheel_dir" --target "$PYDEPS" --upgrade pyserial > /tmp/pip_pyserial.log 2>&1
-      fi
-      if ! python3 -c "import serial" > /dev/null 2>&1; then
-        echo "[bootstrap] pyserial: installing from PyPI (needs network)..."
-        python3 -m pip install --target "$PYDEPS" --upgrade pyserial > /tmp/pip_pyserial.log 2>&1
-      fi
-      if python3 -c "import serial" > /dev/null 2>&1; then
-        echo "[bootstrap] pyserial: ok"
-      else
-        echo "[bootstrap] pyserial NOT available; AGNOS updater may fail importing serial"
-      fi
-    fi
-  fi
-
   # hardware specific init
   if [ -f /AGNOS ]; then
     agnos_init