Remove deprecated /v1/attachments

service/src/main/java/org/whispersystems/textsecuregcm/entities/AttachmentDescriptorV1.java

@@ -1,39 +0,0 @@
-/*
- * Copyright 2013-2020 Signal Messenger, LLC
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-package org.whispersystems.textsecuregcm.entities;
-
-import com.fasterxml.jackson.annotation.JsonProperty;
-
-public class AttachmentDescriptorV1 {
-
-  @JsonProperty
-  private long id;
-
-  @JsonProperty
-  private String idString;
-
-  @JsonProperty
-  private String location;
-
-  public AttachmentDescriptorV1(long id, String location) {
-    this.id       = id;
-    this.idString = String.valueOf(id);
-    this.location = location;
-  }
-
-  public AttachmentDescriptorV1() {}
-
-  public long getId() {
-    return id;
-  }
-
-  public String getLocation() {
-    return location;
-  }
-
-  public String getIdString() {
-    return idString;
-  }
-}