Revert "Use aidl interface for Widevine service."

This reverts commit 96a8ccd4a1.

Reason for revert:
Could break DeviceManifest/SingleManifestTest#ManifestAidlHalsServed

Bug: 200055138
Bug: 170964303
Bug: 217241995
Change-Id: I9c42df15defec428c9ef8c62439c63d4a603fee6

libwvdrmengine/aidl_include/WVCryptoFactory.h

@@ -1,45 +0,0 @@
-//
-// Copyright 2021 Google LLC. All Rights Reserved. This file and proprietary
-// source code may only be used and distributed under the Widevine License
-// Agreement.
-//
-
-#ifndef WV_CRYPTO_FACTORY_H_
-#define WV_CRYPTO_FACTORY_H_
-
-#include <aidl/android/hardware/drm/BnCryptoFactory.h>
-#include <aidl/android/hardware/drm/ICryptoFactory.h>
-#include <aidl/android/hardware/drm/ICryptoPlugin.h>
-
-#include "WVTypes.h"
-
-namespace wvdrm {
-namespace hardware {
-namespace drm {
-namespace widevine {
-
-struct WVCryptoFactory : public ::aidl::android::hardware::drm::BnCryptoFactory {
- public:
-  WVCryptoFactory() {}
-  virtual ~WVCryptoFactory() {}
-
-  ::ndk::ScopedAStatus createPlugin(
-      const ::aidl::android::hardware::drm::Uuid& in_uuid,
-      const std::vector<uint8_t>& in_initData,
-      std::shared_ptr<::aidl::android::hardware::drm::ICryptoPlugin>*
-          _aidl_return) override;
-
-  ::ndk::ScopedAStatus isCryptoSchemeSupported(
-      const ::aidl::android::hardware::drm::Uuid& in_uuid,
-      bool* _aidl_return) override;
-
- private:
-  WVDRM_DISALLOW_COPY_AND_ASSIGN(WVCryptoFactory);
-};
-
-}  // namespace widevine
-}  // namespace drm
-}  // namespace hardware
-}  // namespace wvdrm
-
-#endif  // WV_CRYPTO_FACTORY_H_