refactor: remove pipx references from Ansible tasks and setup script

setup.sh

@@ -247,25 +247,7 @@ EOF
     fi
 }
 
-ensure_pipx() {
-    if ! command -v pipx >/dev/null 2>&1; then
-        log_info "Installing pipx..."
-        
-        attempt_package_install "pipx"
-
-        # On Arch Linux, install pipx using pacman
-        if command -v pacman >/dev/null 2>&1; then
-            sudo pacman -S python-pipx || die "Failed to install pipx"
-        fi
-
-        # ensurepath
-        sudo pipx ensurepath || die "Failed to ensure pipx path"
-    fi
-}
-
 setup_ansible() {
-    ensure_pipx
-
     log_info "Installing Ansible..."
     attempt_package_install "ansible"
     attempt_package_install "ansible-lint"