feat: remove catboost models and dependency

Author: xmatthias

freqtrade/freqai/prediction_models/CatboostClassifier.py

@@ -85,7 +85,6 @@ hyperopt = [
 freqai = [
   "scikit-learn",
   "joblib",
-  "catboost; platform_machine != 'arm'",
   "lightgbm",
   "xgboost",
   "tensorboard",

freqtrade/freqai/prediction_models/CatboostClassifierMultiTarget.py

@@ -5,7 +5,6 @@
 # Required for freqai
 scikit-learn==1.7.2
 joblib==1.5.2
-catboost==1.2.8; 'arm' not in platform_machine
 lightgbm==4.6.0
 xgboost==3.1.2
 tensorboard==2.20.0