Remove inconsistent type hints #8453

Job	Run time
Build, test and upload wheel	1m 28s
Framework / bare	2m 50s
Framework / bare-https	1m 21s
Strategy / FedMedian	1m 20s
Framework / jax	1m 53s
Strategy / FedTrimmedAvg	2m 40s
Framework / pytorch	3m 15s
Strategy / QFedAvg	1m 22s
Strategy / FaultTolerantFedAvg	3m 32s
Framework / tensorflow	5m 14s
Strategy / FedAvgM	3m 22s
Framework / tabnet	2m 49s
Strategy / FedAdam	3m 47s
Framework / opacus	2m 42s
Strategy / FedAdagrad	1m 13s
Framework / pytorch-lightning	2m 40s
Strategy / FedYogi	1m 19s
Framework / scikit-learn	2m 50s
Framework / fastai	4m 2s
Framework / pandas	2m 31s
	52m 10s

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