nfc: Fix MFUL auth success usage, remove unused variable

lib/nfc/nfc_device.c

@@ -215,7 +215,7 @@ bool nfc_device_load_mifare_ul_data(FlipperFormat* file, NfcDevice* dev) {
             auth_counter = 0;
         data->curr_authlim = auth_counter;
 
-        data->has_auth = mf_ul_is_full_capture(data);
+        data->auth_success = mf_ul_is_full_capture(data);
 
         parsed = true;
     } while(false);

lib/nfc/protocols/mifare_ultralight.c

@@ -51,7 +51,7 @@ void mf_ul_reset(MfUltralightData* data) {
     data->data_size = 0;
     data->data_read = 0;
     data->curr_authlim = 0;
-    data->has_auth = false;
+    data->auth_success = false;
 }
 
 static MfUltralightFeatures mf_ul_get_features(MfUltralightType type) {

lib/nfc/protocols/mifare_ultralight.h

@@ -110,7 +110,6 @@ typedef struct {
     uint8_t signature[32];
     uint32_t counter[3];
     uint8_t tearing[3];
-    bool has_auth;
     MfUltralightAuthMethod auth_method;
     uint8_t auth_key[4];
     bool auth_success;