Remove VPN launch pixels (#2845)

Task/Issue URL:
https://app.asana.com/0/1203137811378537/1206905458729874/f
Tech Design URL:
CC:

**Description**:

This PR removes VPN launch pixels.

DuckDuckGo/Menus/MainMenuActions.swift

@@ -794,11 +794,6 @@ extension MainViewController {
         Application.appDelegate.subscriptionManager.accountManager.signOut()
         resetThankYouModalChecks(nil)
         UserDefaults.netP.networkProtectionEntitlementsExpired = false
-
-        // Clear pixel data
-        PixelKit.shared?.clearFrequencyHistoryFor(pixel: PrivacyProPixel.privacyProFeatureEnabled)
-        PixelKit.shared?.clearFrequencyHistoryFor(pixel: PrivacyProPixel.privacyProBetaUserThankYouDBP)
-        PixelKit.shared?.clearFrequencyHistoryFor(pixel: PrivacyProPixel.privacyProBetaUserThankYouVPN)
     }
 
     @objc func resetDailyPixels(_ sender: Any?) {

DuckDuckGo/Statistics/PrivacyProPixel.swift

@@ -29,9 +29,6 @@ fileprivate let appDistribution = "direct"
 
 enum PrivacyProPixel: PixelKitEventV2 {
     // Subscription
-    case privacyProFeatureEnabled
-    case privacyProBetaUserThankYouVPN
-    case privacyProBetaUserThankYouDBP
     case privacyProSubscriptionActive
     case privacyProOfferScreenImpression
     case privacyProPurchaseAttempt
@@ -74,10 +71,6 @@ enum PrivacyProPixel: PixelKitEventV2 {
 
     var name: String {
         switch self {
-        case .privacyProFeatureEnabled: return
-            "m_mac_\(appDistribution)_privacy-pro_feature_enabled"
-        case .privacyProBetaUserThankYouVPN: return "m_mac_\(appDistribution)_privacy-pro_promotion-dialog_shown_vpn"
-        case .privacyProBetaUserThankYouDBP: return "m_mac_\(appDistribution)_privacy-pro_promotion-dialog_shown_dbp"
         case .privacyProSubscriptionActive: return "m_mac_\(appDistribution)_privacy-pro_app_subscription_active"
         case .privacyProOfferScreenImpression: return "m_mac_\(appDistribution)_privacy-pro_offer_screen_impression"
         case .privacyProPurchaseAttempt: return "m_mac_\(appDistribution)_privacy-pro_terms-conditions_subscribe_click"

DuckDuckGo/Waitlist/Views/WaitlistThankYouPromptPresenter.swift

@@ -48,19 +48,12 @@ final class WaitlistThankYouPromptPresenter {
     // If the user tested both, the PIR prompt will be displayed.
     @MainActor
     func presentThankYouPromptIfNecessary(in window: NSWindow) {
-        // Wiring this here since it's mostly useful for rolling out PrivacyPro, and should
-        // go away once PPro is fully rolled out.
-        if DefaultSubscriptionFeatureAvailability().isFeatureAvailable {
-            PixelKit.fire(PrivacyProPixel.privacyProFeatureEnabled, frequency: .daily)
-        }
-
         guard canShowPromptCheck() else {
             return
         }
 
         if isPIRBetaTester() {
             saveDidShowPromptCheck()
-            PixelKit.fire(PrivacyProPixel.privacyProBetaUserThankYouDBP, frequency: .dailyAndCount)
             presentPIRThankYouPrompt(in: window)
         }
     }

DuckDuckGoVPN/DuckDuckGoVPNAppDelegate.swift

@@ -422,7 +422,6 @@ final class DuckDuckGoVPNAppDelegate: NSObject, NSApplicationDelegate {
                     UserDefaults.netP.networkProtectionEntitlementsExpired = false
                 case .invalidEntitlement:
                     UserDefaults.netP.networkProtectionEntitlementsExpired = true
-                    PixelKit.fire(VPNPrivacyProPixel.vpnAccessRevokedDialogShown, frequency: .dailyAndCount)
 
                     guard let self else { return }
                     Task {