fix: compiling errors

main/boards/electron-bot/movements.cc

@@ -5,8 +5,6 @@
 
 #include "oscillator.h"
 
-static const char* TAG = "Movements";
-
 Otto::Otto() {
     is_otto_resting_ = false;
     for (int i = 0; i < SERVO_COUNT; i++) {

main/boards/electron-bot/oscillator.cc

@@ -6,12 +6,8 @@
 #include <algorithm>
 #include <cmath>
 
-static const char* TAG = "Oscillator";
-
 extern unsigned long IRAM_ATTR millis();
 
-static ledc_channel_t next_free_channel = LEDC_CHANNEL_0;
-
 Oscillator::Oscillator(int trim) {
     trim_ = trim;
     diff_limit_ = 0;