Revert accidental change

Author: var-const

Firestore/Example/Firestore.xcodeproj/xcshareddata/xcschemes/Firestore_IntegrationTests_iOS.xcscheme

@@ -26,8 +26,6 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      enableAddressSanitizer = "YES"
-      enableASanStackUseAfterReturn = "YES"
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
          <TestableReference