Remove no longer used JSON model

Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>

app/src/main/java/com/nextcloud/talk/models/json/signaling/NCMessageWrapper.kt

@@ -1,42 +0,0 @@
-/*
- * Nextcloud Talk application
- *
- * @author Mario Danic
- * @author Andy Scherzinger
- * Copyright (C) 2022 Andy Scherzinger <info@andy-scherzinger.de>
- * Copyright (C) 2017 Mario Danic <mario@lovelyhq.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-package com.nextcloud.talk.models.json.signaling
-
-import android.os.Parcelable
-import com.bluelinelabs.logansquare.annotation.JsonField
-import com.bluelinelabs.logansquare.annotation.JsonObject
-import kotlinx.android.parcel.Parcelize
-
-@Parcelize
-@JsonObject
-data class NCMessageWrapper(
-    @JsonField(name = ["fn"])
-    var signalingMessage: NCSignalingMessage? = null,
-    /** always a "message" */
-    @JsonField(name = ["ev"])
-    var ev: String? = null,
-    @JsonField(name = ["sessionId"])
-    var sessionId: String? = null
-) : Parcelable {
-    // This constructor is added to work with the 'com.bluelinelabs.logansquare.annotation.JsonObject'
-    constructor() : this(null, null, null)
-}