Remove superfluous recursive call

ampel-firmware/co2_sensor.cpp

@@ -211,7 +211,6 @@ namespace sensor {
       Serial.print(config::measurement_timestep);
       Serial.println(" s.");
       scd30.setMeasurementInterval(config::measurement_timestep); // [s]
-      switchStateForCurrentPPM(); // Check all other conditions again
     }
     // These 'else if' constructs are, strictly speaking, unnecessary,
     // because they are not reached if the previous condition was fulfilled.