chore: Remove deprecated experimental MetricsAPI #9570

Job	Run time
pod lint Sentry/HybridSDK	1m 56s
pod lint Sentry dynamic ios	5m 21s
pod lint Sentry static ios	3m 19s
Run Shellcheck	20s
Swift Lint	21s
pod lint Sentry dynamic macos	6m 36s
pod lint Sentry static macos	8m 6s
Xcode Analyze	5m 21s
pod lint Sentry dynamic tvos	4m 30s
pod lint Sentry static tvos	3m 48s
pod lint Sentry dynamic watchos	5m 8s
pod lint Sentry static watchos	2m 57s
pod lint SentrySwiftUI dynamic ios	2m 15s
pod lint SentrySwiftUI static ios	2m 29s
pod lint SentrySwiftUI dynamic macos	4m 8s
pod lint SentrySwiftUI static macos	4m 24s
pod lint SentrySwiftUI dynamic tvos	1m 47s
pod lint SentrySwiftUI static tvos	3m 56s
pod lint SentrySwiftUI dynamic watchos	1m 50s
pod lint SentrySwiftUI static watchos	1m 41s
	1h 10m 13s

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