Remove old experimental protos

PiperOrigin-RevId: 267996180
Change-Id: I0430bed6ce8866b671c54a343b97046c189a3e91
diff --git a/src/main/proto/search/now/wire/feed/feed_card.proto b/src/main/proto/search/now/wire/feed/feed_card.proto
deleted file mode 100644
index e99df10..0000000
--- a/src/main/proto/search/now/wire/feed/feed_card.proto
+++ /dev/null
@@ -1,34 +0,0 @@
-// Copyright 2018 The Feed Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-syntax = "proto2";
-
-import "src/main/proto/search/now/wire/feed/content_id.proto";
-import "src/main/proto/search/now/ui/piet/piet.proto";
-
-package search.now.wire.feed;
-
-option optimize_for=LITE_RUNTIME;
-
-option java_package = "com.google.search.now.wire.feed";
-option java_outer_classname = "FeedCardProto";
-
-// Representation of a card within the feed
-message FeedCard {
-  // Unique identifier for the card
-  optional ContentId content_id = 1;
-
-  // Piet UI representation
-  optional search.now.ui.piet.Frame piet_frame_ui = 2;
-}
diff --git a/src/main/proto/search/now/wire/feed/feed_stream.proto b/src/main/proto/search/now/wire/feed/feed_stream.proto
deleted file mode 100644
index 4405086..0000000
--- a/src/main/proto/search/now/wire/feed/feed_stream.proto
+++ /dev/null
@@ -1,34 +0,0 @@
-// Copyright 2018 The Feed Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-syntax = "proto2";
-
-import "src/main/proto/search/now/wire/feed/feed_card.proto";
-import "src/main/proto/search/now/ui/piet/piet.proto";
-
-package search.now.wire.feed;
-
-option optimize_for=LITE_RUNTIME;
-
-option java_package = "com.google.search.now.wire.feed";
-option java_outer_classname = "FeedStreamProto";
-
-// Representation of the entire stream of data in the feed
-message FeedStream {
-  // Shared state for all Piet cards
-  optional search.now.ui.piet.PietSharedState piet_shared_state = 1;
-
-  // List of cards within the stream
-  repeated FeedCard cards = 2;
-}