Switch to "espota" script from Arduino core

Author: ivankravets

builder/main.py

@@ -303,7 +303,8 @@ def _update_max_upload_size(env):
             "espressif8266.html#over-the-air-ota-update\n")
     env.Replace(
         UPLOADER=join(
-            platform.get_package_dir("tool-espotapy") or "", "espota.py"),
+            platform.get_package_dir("framework-arduinoespressif8266") or "",
+            "tools", "espota.py"),
         UPLOADERFLAGS=["--debug", "--progress", "-i", "$UPLOAD_PORT"],
         UPLOADCMD='"$PYTHONEXE" "$UPLOADER" $UPLOADERFLAGS -f $SOURCE'
     )

platform.json

@@ -71,11 +71,6 @@
       "type": "uploader",
       "version": "~1.20600.0"
     },
-    "tool-espotapy": {
-      "type": "uploader",
-      "optional": true,
-      "version": "~1.1.0"
-    },
     "tool-mkspiffs": {
       "type": "uploader",
       "optional": true,