Remove automatic cache clearing before start in iOS, since we now hav…

…e a patch to Tor which makes this superfluous. Now starts with a warm cache will be way faster again.

Orbot/SettingsViewController.swift

@@ -179,7 +179,24 @@ class SettingsViewController: BaseFormViewController {
 			}
 		})
 
-		+++ LabelRow() {
+		+++ Section(L10n.maintenance)
+		<<< ButtonRow("clearCache") {
+			$0.title = L10n.clearTorCache
+			$0.disabled = Condition.function(["clearCache"], { _ in
+				VpnManager.shared.isConnected
+			})
+		}
+		.onCellSelection({ _, row in
+			if row.isDisabled {
+				return
+			}
+
+			TorHelpers.clearCache()
+
+			AlertHelper.present(self, message: L10n.cleared, title: L10n.clearTorCache)
+		})
+
+		<<< LabelRow() {
 			$0.title = L10n.version
 			$0.cellStyle = .default
 
@@ -189,6 +206,10 @@ class SettingsViewController: BaseFormViewController {
 				textLabel.font = textLabel.font.withSize(textLabel.font.pointSize * 0.75)
 			}
 		}
+
+		NotificationCenter.default.addObserver(forName: .vpnStatusChanged, object: nil, queue: .main) { [weak self] _ in
+			self?.form.rowBy(tag: "clearCache")?.evaluateDisabled()
+		}
 	}
 
 	override func viewDidDisappear(_ animated: Bool) {

Shared/TorManager.swift

@@ -125,13 +125,6 @@ class TorManager {
 		return
 #else
 		if !torRunning {
-	// When running on iOS, always delete the cache before starting.
-	// Something with the network happened and now Tor almost always uses too much
-	// memory when starting with cached microdescriptors.
-	#if os(iOS)
-			TorHelpers.clearCache()
-	#endif
-
 			torConf = getTorConf()
 
 //			if let debug = torConf?.compile().joined(separator: ", ") {