impl(bigtable): remove deprecated AsyncRowReader header

Author: mpeddada1

doc/v3-migration-guide.md

@@ -46,6 +46,14 @@ module which can be added to your `MODULE.bazel` file as a dependency.
 
 ### Bigtable
 
+<details>
+<summary>Removed <code>bigtable::AsyncRowReader<>::NO_ROWS_LIMIT</code>
+</summary>
+
+AsyncRowReader::NO_ROWS_LIMIT has been removed. Please use RowReader::NO_ROWS_LIMIT` instead.
+
+</details>
+
 ### Pubsub
 
 ### Spanner

google/cloud/bigtable/CMakeLists.txt

@@ -108,7 +108,6 @@ add_library(
     admin_client.h
     app_profile_config.cc
     app_profile_config.h
-    async_row_reader.h
     bound_query.cc
     bound_query.h
     bytes.cc

google/cloud/bigtable/async_row_reader.h

@@ -47,7 +47,6 @@ google_cloud_cpp_bigtable_hdrs = [
     "admin/internal/bigtable_table_admin_tracing_stub.h",
     "admin_client.h",
     "app_profile_config.h",
-    "async_row_reader.h",
     "bound_query.h",
     "bytes.h",
     "cell.h",