Remove unused RX boosted gain mode functions and related preprocessor directives across multiple variants

variants/heltec_ct62/platformio.ini

@@ -5,7 +5,6 @@ build_flags =
   ${esp32_base.build_flags}
   -I variants/heltec_ct62
   -D HELTEC_HT_CT62=1
-  -D USE_SX1262
   -D RADIO_CLASS=CustomSX1262
   -D WRAPPER_CLASS=CustomSX1262Wrapper
   -D ESP32_CPU_FREQ=80

variants/heltec_ct62/target.cpp

@@ -35,13 +35,3 @@ mesh::LocalIdentity radio_new_identity() {
   RadioNoiseListener rng(radio);
   return mesh::LocalIdentity(&rng);  // create new random identity
 }
-
-#if defined(USE_SX1262) || defined(USE_SX1268)
-void radio_set_rx_boosted_gain_mode(bool rxbgm) {
-  radio.setRxBoostedGainMode(rxbgm);
-}
-
-bool radio_get_rx_boosted_gain_mode() {
-  return radio.getRxBoostedGainMode();
-}
-#endif

variants/heltec_ct62/target.h

@@ -18,8 +18,3 @@ uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
 void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
-
-#if defined(USE_SX1262) || defined(USE_SX1268)
-bool radio_get_rx_boosted_gain_mode();
-void radio_set_rx_boosted_gain_mode(bool rxbgm);
-#endif