ref: Remove unused getAllThreads method #9089

Job	Run time
Build XCFramework	16m 41s
Sample macOS-Swift	2m 57s
Sample iOS13-Swift	2m 47s
Release Build of iOS Swift	3m 34s
Sample watchOS-Swift WatchKit App	2m 25s
Check no UIKit linkage (DebugWithoutUIKit)	47s
Sample macOS-SwiftUI	2m 37s
Check UIKit linkage (Debug)	1m 13s
Check no UIKit linkage (ReleaseWithoutUIKit)	1m 8s
Check UIKit linkage (Release)	2m 18s
Validate XCFramework	1m 18s
Validate Swift Package Manager Dynamic	56s
Validate Swift Package Manager	1m 20s
Build with Swift	52s
	40m 53s

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