General cleanup

Marlin/Marlin_main.cpp

@@ -5858,10 +5858,6 @@ inline void gcode_M42() {
 
     #else
 
-      #if !defined(z_servo_angle)
-        const int z_servo_angle[2] = Z_SERVO_ANGLES;
-      #endif
-
       const uint8_t probe_index = code_seen('P') ? code_value_byte() : Z_ENDSTOP_SERVO_NR;
 
       SERIAL_PROTOCOLLNPGM("Servo probe test");

Marlin/servo.cpp

@@ -168,8 +168,8 @@ static void initISR(timer16_Sequence_t timer) {
         SBI(TIFR, OCF3A);     // clear any pending interrupts;
         SBI(ETIMSK, OCIE3A);  // enable the output compare interrupt
       #else
-        TIFR3 = _BV(OCF3A);     // clear any pending interrupts;
-        TIMSK3 =  _BV(OCIE3A) ; // enable the output compare interrupt
+        SBI(TIFR3, OCF3A);   // clear any pending interrupts;
+        SBI(TIMSK3, OCIE3A); // enable the output compare interrupt
       #endif
       #ifdef WIRING
         timerAttach(TIMER3OUTCOMPAREA_INT, Timer3Service);  // for Wiring platform only