fix: unit tests

Signed-off-by: Steven Kreitzer <[email protected]>

Author: buroa

internal/xds/bootstrap/testdata/render/enable-prometheus-zstd-compression.yaml

@@ -78,10 +78,6 @@ static_resources:
           - name: envoy.filters.http.compressor
             typed_config:
               "@type": type.googleapis.com/envoy.extensions.filters.http.compressor.v3.Compressor
-              response_direction_config:
-                remove_accept_encoding_header: true
-              response_direction_config:
-                remove_accept_encoding_header: true
               choose_first: true
               compressor_library:
                 name: text_optimized