diff --git a/Core/Sources/Core/Blocks.swift b/Core/Sources/Core/Blocks.swift
index 1a99f3a12..a46dd57b7 100644
--- a/Core/Sources/Core/Blocks.swift
+++ b/Core/Sources/Core/Blocks.swift
@@ -11,12 +11,6 @@ import Foundation
 public typealias VoidBlock = () -> Void
 public typealias VoidCompletionBlock = VoidBlock
 
-/// Call a VoidCompletionBlock on the main thread.
-/// - Parameter block: The block to call.
-public func callVoidCompletionBlock(_ block: @escaping VoidCompletionBlock) {
-	DispatchQueue.main.async(execute: block)
-}
-
 public typealias VoidResult = Result<Void, Error>
 public typealias VoidResultCompletionBlock = (VoidResult) -> Void
 
diff --git a/Core/Sources/Core/MainThreadBlockOperation.swift b/Core/Sources/Core/MainThreadBlockOperation.swift
deleted file mode 100644
index 73c52d8f7..000000000
--- a/Core/Sources/Core/MainThreadBlockOperation.swift
+++ /dev/null
@@ -1,33 +0,0 @@
-//
-//  MainThreadBlockOperation.swift
-//  RSCore
-//
-//  Created by Brent Simmons on 1/16/20.
-//  Copyright © 2020 Ranchero Software, LLC. All rights reserved.
-//
-
-import Foundation
-
-/// Run a block of code as an operation.
-///
-/// This also serves as a simple example implementation of MainThreadOperation.
-public final class MainThreadBlockOperation: MainThreadOperation {
-
-	// MainThreadOperation
-	public var isCanceled = false
-	public var id: Int?
-	public var operationDelegate: MainThreadOperationDelegate?
-	public var name: String?
-	public var completionBlock: MainThreadOperation.MainThreadOperationCompletionBlock?
-
-	private let block: VoidBlock
-
-	public init(block: @escaping VoidBlock) {
-		self.block = block
-	}
-
-	public func run() {
-		block()
-		informOperationDelegateOfCompletion()
-	}
-}
diff --git a/Core/Sources/Core/ManagedResourceFile.swift b/Core/Sources/Core/ManagedResourceFile.swift
deleted file mode 100644
index ea1652abe..000000000
--- a/Core/Sources/Core/ManagedResourceFile.swift
+++ /dev/null
@@ -1,127 +0,0 @@
-//
-//  ManagedResourceFile.swift
-//  RSCore
-//
-//  Created by Maurice Parker on 9/13/19.
-//  Copyright © 2020 Ranchero Software, LLC. All rights reserved.
-//
-
-import Foundation
-
-public final class ManagedResourceFile: NSObject, NSFilePresenter {
-	
-	private var isDirty = false {
-		didSet {
-			queueSaveToDiskIfNeeded()
-		}
-	}
-	
-	private var isLoading = false
-	private let fileURL: URL
-	private let operationQueue: OperationQueue
-	private var saveQueue: CoalescingQueue
-
-	private let loadCallback: () -> Void
-	private let saveCallback: () -> Void
-
-	public var saveInterval: TimeInterval = 5.0 {
-		didSet {
-			saveQueue.performCallsImmediately()
-			saveQueue = CoalescingQueue(name: "ManagedResourceFile Save Queue", interval: saveInterval)
-		}
-	}
-	
-	public var presentedItemURL: URL? {
-		return fileURL
-	}
-	
-	public var presentedItemOperationQueue: OperationQueue {
-		return operationQueue
-	}
-	
-	public init(fileURL: URL, load: @escaping () -> Void, save: @escaping () -> Void) {
-		
-		self.fileURL = fileURL
-		self.loadCallback = load
-		self.saveCallback = save
-		
-		saveQueue = CoalescingQueue(name: "ManagedResourceFile Save Queue", interval: saveInterval)
-		operationQueue = OperationQueue()
-		operationQueue.qualityOfService = .userInteractive
-		operationQueue.maxConcurrentOperationCount = 1
-	
-		super.init()
-		
-		NSFileCoordinator.addFilePresenter(self)
-	}
-	
-	public func presentedItemDidChange() {
-		guard !isDirty else { return }
-		DispatchQueue.main.async {
-			self.load()
-		}
-	}
-	
-	public func savePresentedItemChanges(completionHandler: @escaping (Error?) -> Void) {
-		saveIfNecessary()
-		completionHandler(nil)
-	}
-	
-	public func relinquishPresentedItem(toReader reader: @escaping ((() -> Void)?) -> Void) {
-		saveQueue.isPaused = true
-		reader() {
-			self.saveQueue.isPaused = false
-		}
-	}
-	
-	public func relinquishPresentedItem(toWriter writer: @escaping ((() -> Void)?) -> Void) {
-		saveQueue.isPaused = true
-		writer() {
-			self.saveQueue.isPaused = false
-		}
-	}
-	
-	public func markAsDirty() {
-		if !isLoading {
-			isDirty = true
-		}
-	}
-	
-	public func queueSaveToDiskIfNeeded() {
-		saveQueue.add(self, #selector(saveToDiskIfNeeded))
-	}
-
-	public func load() {
-		isLoading = true
-		loadCallback()
-		isLoading = false
-	}
-	
-	public func saveIfNecessary() {
-		saveQueue.performCallsImmediately()
-	}
-	
-	public func resume() {
-		NSFileCoordinator.addFilePresenter(self)
-	}
-	
-	public func suspend() {
-		NSFileCoordinator.removeFilePresenter(self)
-	}
-	
-	deinit {
-		NSFileCoordinator.removeFilePresenter(self)
-	}
-	
-}
-
-private extension ManagedResourceFile {
-	
-	@objc func saveToDiskIfNeeded() {
-		if isDirty {
-			isDirty = false
-			saveCallback()
-		}
-	}
-
-}