runsvdir: simplify xidlehook service

.config/service/xidlehook/run

@@ -2,31 +2,11 @@
 
 # shellcheck disable=SC2016
 
-while IFS= read -r line; do
-    case "$line" in
-    *primary*)
-        export PRIMARY_DISPLAY="${line%% *}"
-        break
-        ;;
-    esac
-done <<EOF
-$(xrandr)
-EOF
-
 exec xidlehook \
     --not-when-fullscreen \
     --socket "$XIDLEHOOK_SOCK" \
     --timer 600 \
-    'xrandr --output "$PRIMARY_DISPLAY" --brightness .1' \
-    'xrandr --output "$PRIMARY_DISPLAY" --brightness 1' \
-    --timer 10 \
-    '(
-if [ -f "$XDG_CACHE_HOME/lock.png" ]; then
-    i3lock -i "$XDG_CACHE_HOME/lock.png"
-else
-    i3lock
-fi
-); xrandr --output "$PRIMARY_DISPLAY" --brightness 1' \
+    'i3lock -i "$XDG_CACHE_HOME/lock.png"' \
     '' \
     --timer 3600 \
     'loginctl suspend' \