Removed service upload_tft

Please use this instead:
```yaml
service: esphome.xxxxx_upload_tft_url
data:
  url: "default"
```

nspanel_esphome_core.yaml

@@ -49,6 +49,16 @@ esphome:
             ESP_LOGD(TAG, "Turn on Nextion");
             screen_power->turn_on();
           }
+      - wait_until:
+          condition:
+            - lambda: !lambda return disp1->is_setup();
+          timeout: 20s
+      - lambda: |-
+          static const char *const TAG = "on_boot";
+          if (not disp1->is_setup()) {
+            ESP_LOGE(TAG, "No response from Nextion display");
+          }
+          ESP_LOGD(TAG, "Finished");
 
 ##### TYPE OF ESP BOARD #####
 esp32: