Clean up Temperature::set_fans_paused

Marlin/src/module/temperature.cpp

 
   #if ENABLED(PROBING_FANS_OFF)
     bool Temperature::fans_paused; // = false;
-    uint8_t Temperature::paused_fan_speed[FAN_COUNT]; // = { 0 }
   #endif
 
   #if ENABLED(ADAPTIVE_FAN_SLOWING)
   #if ENABLED(PROBING_FANS_OFF)
 
     void Temperature::set_fans_paused(const bool p) {
+      static uint8_t saved_fan_speed[FAN_COUNT]; // = { 0 }
       if (p != fans_paused) {
         fans_paused = p;
         if (p)
-          FANS_LOOP(x) { paused_fan_speed[x] = fan_speed[x]; fan_speed[x] = 0; }
+          FANS_LOOP(i) { saved_fan_speed[i] = fan_speed[i]; fan_speed[i] = 0; }
         else
-          FANS_LOOP(x) fan_speed[x] = paused_fan_speed[x];
+          FANS_LOOP(i) fan_speed[i] = saved_fan_speed[i];
       }
     }
 

Marlin/src/module/temperature.h

 
       #if ENABLED(PROBING_FANS_OFF)
         static bool fans_paused;
-        static uint8_t paused_fan_speed[FAN_COUNT];
       #endif
 
       static constexpr inline uint8_t fanPercent(const uint8_t speed) { return ui8_to_percent(speed); }