[Infra] Clean up visionOS conditionals #7565

Job	Run time
spm-binary-cron	0s
changes	5s
check	1m 46s
cmake-prod-db (macos-14, (default))	17m 11s
cmake (macos-14)	12m 53s
cmake-prod-db (macos-14, test-db)	16m 39s
cmake (ubuntu-latest)	2m 24s
sanitizers-mac (macos-14, asan)	13m 34s
sanitizers-ubuntu (ubuntu-latest, asan)	2m 19s
sanitizers-mac (macos-14, tsan)	16m 6s
check-firestore-internal-public-headers	6s
pod-lib-lint (FirebaseFirestoreInternal.podspec)	29m 44s
pod-lib-lint (FirebaseFirestore.podspec)	26m 7s
pod-lib-lint-cron	0s
spm-binary	2m 42s
spm-source (iOS, macos-13)	4m 50s
xcodebuild (iOS)	20m 2s
spm-source (iOS, macos-14)	5m 57s
xcodebuild (macOS)	13m 15s
spm-source (tvOS, macos-13)	6m 14s
xcodebuild (tvOS)	14m 32s
spm-source (tvOS, macos-14)	5m 26s
spm-source (macOS, macos-13)	6m 8s
spm-source (macOS, macos-14)	5m 24s
spm-source (macos-14, visionOS, Xcode_15.3)	7m 14s
Check all required Firestore tests results	1s
	3h 50m 39s

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