Revert "Demo to add kaldi-native-fbank (#3)"

This reverts commit 89149f9000.

sherpa-onnx/csrc/online-fbank-test.cc

@@ -1,48 +0,0 @@
-/**
- * Copyright (c)  2022  Xiaomi Corporation (authors: Fangjun Kuang)
- *
- * See LICENSE for clarification regarding multiple 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.
- */
-
-#include <iostream>
-
-#include "kaldi-native-fbank/csrc/online-feature.h"
-
-int main() {
-  knf::FbankOptions opts;
-  opts.frame_opts.dither = 0;
-  opts.mel_opts.num_bins = 10;
-
-  knf::OnlineFbank fbank(opts);
-  for (int32_t i = 0; i < 1600; ++i) {
-    float s = (i * i - i / 2) / 32767.;
-    fbank.AcceptWaveform(16000, &s, 1);
-  }
-
-  std::ostringstream os;
-
-  int32_t n = fbank.NumFramesReady();
-  for (int32_t i = 0; i != n; ++i) {
-    const float *frame = fbank.GetFrame(i);
-    for (int32_t k = 0; k != opts.mel_opts.num_bins; ++k) {
-      os << frame[k] << ", ";
-    }
-    os << "\n";
-  }
-
-  std::cout << os.str() << "\n";
-
-  return 0;
-}