Revise leaderboard details in README.md (#61)

Author: abdulfatir

README.md

@@ -127,11 +127,7 @@ Examples of model implementations compatible with `fev` are available in [`examp
 
 
 ## 🏅 Leaderboards
-We host leaderboards obtained using `fev` under https://huggingface.co/spaces/autogluon/fev-leaderboard. A mirror of the leaderboard is available at https://huggingface.co/spaces/autogluon/fev-leaderboard-mirror.
-
-This leaderboard includes results for the benchmark from [fev-bench: A Realistic Benchmark for Time Series Forecasting](https://arxiv.org/abs/2509.26468).
-
-Previous results for Chronos Benchmark II are available in [benchmarks/chronos_zeroshot/](benchmarks/chronos_zeroshot/).
+We host leaderboards obtained using `fev` under https://huggingface.co/spaces/autogluon/fev-bench. This leaderboard includes results for the benchmark from [fev-bench: A Realistic Benchmark for Time Series Forecasting](https://arxiv.org/abs/2509.26468). Previous results for Chronos Benchmark II are available in [benchmarks/chronos_zeroshot/](benchmarks/chronos_zeroshot/).
 
 ## 📈 Datasets
 Repositories with datasets in format compatible with `fev`:
@@ -150,4 +146,4 @@ If you find this package useful for your research, please consider citing the as
   archivePrefix={arXiv},
   primaryClass={cs.LG}
 }
-```
+```