FilesToSendDelegate: fix document preview

GitLab: #1089

Change-Id: Ia17f68998fb1b71f2cfbe0406a1dfffc283af0c2

src/app/mainview/components/FilesToSendDelegate.qml

@@ -74,15 +74,7 @@ Item {
                         visible: !IsImage
                         anchors.fill: parent
                         anchors.margins: 14
-                        source: {
-                            if(mediaInfo.isVideo)
-                                return JamiResources.video_file_svg
-
-                            if(mediaInfo.isAudio)
-                                return JamiResources.audio_file_svg
-
-                            return JamiResources.attached_file_svg
-                        }
+                        source: JamiResources.attached_file_svg
                         cache: false
                         color: JamiTheme.textColor
                     }