[Impeller] Disable AHB swapchain.

impeller/renderer/backend/vulkan/swapchain/swapchain_vk.cc

@@ -9,10 +9,6 @@
 #include "impeller/renderer/backend/vulkan/swapchain/khr/khr_swapchain_vk.h"
 #include "impeller/renderer/backend/vulkan/vk.h"
 
-#if FML_OS_ANDROID
-#include "impeller/renderer/backend/vulkan/swapchain/ahb/ahb_swapchain_vk.h"
-#endif  // FML_OS_ANDROID
-
 namespace impeller {
 
 std::shared_ptr<SwapchainVK> SwapchainVK::Create(
@@ -55,27 +51,6 @@ std::shared_ptr<SwapchainVK> SwapchainVK::Create(
     return nullptr;
   }
 
-  // TODO(147533): AHB swapchains on emulators are not functional.
-  const auto emulator = ContextVK::Cast(*context).GetDriverInfo()->IsEmulator();
-
-  // Try AHB swapchains first.
-  if (!emulator && AHBSwapchainVK::IsAvailableOnPlatform()) {
-    auto ahb_swapchain = std::shared_ptr<AHBSwapchainVK>(new AHBSwapchainVK(
-        context,             //
-        window.GetHandle(),  //
-        std::move(surface),  //
-        window.GetSize(),    //
-        enable_msaa          //
-        ));
-
-    if (ahb_swapchain->IsValid()) {
-      return ahb_swapchain;
-    } else {
-      VALIDATION_LOG
-          << "Could not create AHB swapchain. Falling back to KHR variant.";
-    }
-  }
-
   // Fallback to KHR swapchains if AHB swapchains aren't available.
   return Create(context, std::move(surface), window.GetSize(), enable_msaa);
 }