[Keyboard] KBDFans Minor Fixes (#5238)

* pragma once and turn on bootmagic lite

* pragma once changes and turning on bootmagic lite

* switch to using pragma once

* switch to using #pragma once

* switch to using #pramga once

keyboards/kbdfans/kbd75/kbd75.h

@@ -1,5 +1,4 @@
-#ifndef KBD75_H
-#define KBD75_H
+#pragma once
 
 #include "quantum.h"
 
@@ -12,4 +11,3 @@
     #include "rev2.h"
 #endif
 
-#endif