Remove triggerMoistureRead() call in ISR and it's trigger variable

- This was done at the very beginning when i thought to develop this
part of the program in a different way. It is unnecessary with how I
actually ended up to structure the program. - WDT should manage TWI
only, as per current developement

firmware/atmega/include/moisture.h

@@ -44,7 +44,6 @@ static const int8_t sensorPins[] = {
 extern volatile bool readSensors;
 
 void sensorsInit(void);
-void triggerMoistureRead(void);
 uint16_t moistureRead(void);
 
 #endif

firmware/atmega/source/main.c

@@ -13,10 +13,6 @@ volatile uint16_t lastMoistureVal = 0;
 volatile uint16_t *pLastMoistureVal = &lastMoistureVal;
 extern bool respondFlag;
 
-ISR(WDT_vect) {
-    triggerMoistureRead();
-}
-
 ISR(TWI_vect) {
     twiListen();
 }
@@ -50,11 +46,9 @@ int main(void) {
     pLastMoistureVal = &lastMoistureVal;
 
     while(true) {
-        if (readSensors) {
-            *pLastMoistureVal = moistureRead();
-            // nested if: (result outside range (see config.h)) {waterPlant()}
-            readSensors = false;
-        }
+        *pLastMoistureVal = moistureRead();
+        // nested if: (result outside range (see config.h)) {waterPlant()}
+
 
         if(respondFlag) {
             twiRespond();

firmware/atmega/source/moisture.c

@@ -17,10 +17,6 @@ void sensorsInit(void) {
     PORTC &= ~sensorMask;
 }
 
-void triggerMoistureRead(void) {
-    readSensors = true;
-}
-
 static uint16_t moistureAverage(uint8_t sensorPin) {
     uint16_t sum = 0;
     for (uint8_t i = 0; i < SENSOR_READINGS; i++) {