Removing Non-HIDL Widevine DRM Plugin for Android

[ Merge of http://go/wvgerrit/138089 ]

Non-hidl code is no longer needed in the widevine android plugin. By
doing work this cleanup will save the team from having to keep
maintaining code that isn't needed anymore.
Clean up steps taken as follows:
    1. Remove non-hidl code but keep commonly used code
    2. Remove legacy test code
    3. Remove legacy test build and test entry

Bug: 69573078
Bug: 172285246
Test: unit tests, GtsMediaTestCases, CtsMediaDrmTestCases
Change-Id: I75938d69413c631ef6be82da3d885ba173efc581

libwvdrmengine/include/WVDrmFactory.h

@@ -1,37 +0,0 @@
-//
-// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
-// source code may only be used and distributed under the Widevine License
-// Agreement.
-//
-
-#ifndef WV_DRM_FACTORY_H_
-#define WV_DRM_FACTORY_H_
-
-#include "media/drm/DrmAPI.h"
-#include "media/stagefright/foundation/ABase.h"
-#include "utils/Errors.h"
-#include "WVGenericCryptoInterface.h"
-
-namespace wvdrm {
-
-class WVDrmFactory : public android::DrmFactory {
- public:
-  WVDrmFactory() {}
-  virtual ~WVDrmFactory() {}
-
-  virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]);
-
-  virtual bool isContentTypeSupported(const android::String8 &initDataType);
-
-  virtual android::status_t createDrmPlugin(const uint8_t uuid[16],
-                                            android::DrmPlugin** plugin);
-
- private:
-  DISALLOW_EVIL_CONSTRUCTORS(WVDrmFactory);
-
-  static WVGenericCryptoInterface sOemCryptoInterface;
-};
-
-} // namespace wvdrm
-
-#endif // WV_DRM_FACTORY_H_