Drop unused attributes of actually used function parameters

These parameters were once unused, but not anymore.

Meter.c

@@ -153,7 +153,7 @@ ListItem* Meter_toListItem(const Meter* this, bool moving) {
 
 /* ---------- TextMeterMode ---------- */
 
-static void TextMeterMode_draw(Meter* this, int x, int y, ATTR_UNUSED int w) {
+static void TextMeterMode_draw(Meter* this, int x, int y, int w) {
    attrset(CRT_colors[METER_TEXT]);
    mvaddnstr(y, x, this->caption, w - 1);
    attrset(CRT_colors[RESET_COLOR]);

linux/SELinuxMeter.c

@@ -69,7 +69,7 @@ static bool isSelinuxEnforcing(void) {
    return !!enforce;
 }
 
-static void SELinuxMeter_updateValues(ATTR_UNUSED Meter* this) {
+static void SELinuxMeter_updateValues(Meter* this) {
    enabled = isSelinuxEnabled();
    enforcing = isSelinuxEnforcing();