just small code cleaning

src/aprs_is_utils.cpp

@@ -11,7 +11,6 @@
 
 extern Configuration  Config;
 extern WiFiClient     espClient;
-extern int            internalLedPin;
 extern uint32_t       lastScreenOn;
 extern String         firstLine;
 extern String         secondLine;
@@ -29,7 +28,7 @@ namespace APRS_IS_Utils {
     }
 
     void connect() {
-        int count = 0;
+        uint8_t count = 0;
         String aprsauth;
         Serial.print("Connecting to APRS-IS ...     ");
         while (!espClient.connect(Config.aprs_is.server.c_str(), Config.aprs_is.port) && count < 20) {

src/gps_utils.cpp

@@ -158,7 +158,7 @@ namespace GPS_Utils {
     }
 
     String getDistance(String packet) {
-        int encodedBytePosition = 0;
+        uint8_t encodedBytePosition = 0;
         if (packet.indexOf(":!") > 10) {
             encodedBytePosition = packet.indexOf(":!") + 14;
         }

src/wifi_utils.cpp

@@ -42,7 +42,7 @@ namespace WIFI_Utils {
         if (currentWiFi->ssid == "") {
             startAP = true;
         } else {
-            int wifiCounter = 0;
+            uint8_t wifiCounter = 0;
             WiFi.mode(WIFI_STA);
             WiFi.disconnect();
             delay(500);