trb.sh: require pkexec instead of falling back to gksudo

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

trb.sh

@@ -6,15 +6,11 @@ if [ ! -f /usr/bin/zenity ];then
 fi
 
 
-distro=$(lsb_release -a | grep -o "VoidLinux")
+if ! command -v pkexec >/dev/null 2>&1;then
-
+    echo "pkexec not installed (install polkit)..."
-auth_prompt_path=$(which pkexec)
+    exit 1
-
-if [ -f  ${auth_prompt_path} ];then
-    su_prompt="pkexec"
-else
-    su_prompt="gksudo"
 fi
+su_prompt="pkexec"
 
 zenity --question --text "Do you want to trim?"
 if [[ $? == 1 ]];then