Remove problematic IO2 3V3 toggling (again) as GPS EN pin (#3317)

* Remove problematic IO2 3V3 toggling (again) as GPS EN pin

* Comment

* Trunk

src/gps/GPS.cpp

@@ -255,19 +255,6 @@ bool GPS::setup()
     if (!didSerialInit) {
 #if !defined(GPS_UC6580)
 
-#if defined(RAK4630) && defined(PIN_3V3_EN)
-        // If we are using the RAK4630 and we have no other peripherals on the I2C bus or module interest in 3V3_S,
-        // then we can safely set en_gpio turn off power to 3V3 (IO2) to hard sleep the GPS
-        if (rtc_found.port == ScanI2C::DeviceType::NONE && rgb_found.type == ScanI2C::DeviceType::NONE &&
-            accelerometer_found.port == ScanI2C::DeviceType::NONE && !moduleConfig.detection_sensor.enabled &&
-            !moduleConfig.telemetry.air_quality_enabled && !moduleConfig.telemetry.environment_measurement_enabled &&
-            config.power.device_battery_ina_address == 0 && en_gpio == 0) {
-            LOG_DEBUG("Since no problematic peripherals or interested modules were found, setting power save GPS_EN to pin %i\n",
-                      PIN_3V3_EN);
-            en_gpio = PIN_3V3_EN;
-        }
-#endif
-
         if (tx_gpio && gnssModel == GNSS_MODEL_UNKNOWN) {
             LOG_DEBUG("Probing for GPS at %d \n", serialSpeeds[speedSelect]);
             gnssModel = probe(serialSpeeds[speedSelect]);

variants/rak4631/variant.h

@@ -219,6 +219,7 @@ SO GPIO 39/TXEN MAY NOT BE DEFINED FOR SUCCESSFUL OPERATION OF THE SX1262 - TG
 #define NRF_APM
 
 // enables 3.3V periphery like GPS or IO Module
+// Do not toggle this for GPS power savings
 #define PIN_3V3_EN (34)
 
 // RAK1910 GPS module