More refactoring

Lots of things removed but compiles again

source/sys_chk.c

@@ -40,6 +40,7 @@ uint16_t Power_tmr, Display_warning_tmr;
 
 void System_Check()
 {
+#if 0
 
 	if(freqArray[frequency].frequency1 <= MAX_DTYPE)
 	{
@@ -89,6 +90,8 @@ void System_Check()
 //		Update_Amp_Pot();
 	}
 #endif
+
+#endif
 }
 
 void Safety_Check(void)
@@ -101,7 +104,7 @@ void Safety_Check(void)
 
 			while(1)
 			{
-				safe_key();
+				//safe_key();
 				Display_Update();
 				Delay_Ticks(10);
 			}