fix: remove title from Chinese chals

curriculum/challenges/chinese/11-machine-learning-with-python/how-neural-networks-work/deep-learning-demystified.md

@@ -1,6 +1,5 @@
 ---
 id: 5e9a0e9ef99a403d019610cc
-title: Deep Learning Demystified
 challengeType: 11
 isHidden: false
 videoId: bejQ-W9BGJg

curriculum/challenges/chinese/11-machine-learning-with-python/how-neural-networks-work/how-convolutional-neural-networks-work.md

@@ -1,6 +1,5 @@
 ---
 id: 5e9a0e9ef99a403d019610cd
-title: How Convolutional Neural Networks work
 challengeType: 11
 isHidden: false
 videoId: Y5M7KH4A4n4

curriculum/challenges/chinese/11-machine-learning-with-python/how-neural-networks-work/how-deep-neural-networks-work.md

@@ -1,6 +1,5 @@
 ---
 id: 5e9a0e9ef99a403d019610ca
-title: How Deep Neural Networks Work
 challengeType: 11
 isHidden: false
 videoId: zvalnHWGtx4

curriculum/challenges/chinese/11-machine-learning-with-python/how-neural-networks-work/recurrent-neural-networks-rnn-and-long-short-term-memory-lstm.md

@@ -1,6 +1,5 @@
 ---
 id: 5e9a0e9ef99a403d019610cb
-title: Recurrent Neural Networks RNN and Long Short Term Memory LSTM
 challengeType: 11
 isHidden: false
 videoId: UVimlsy9eW0